Оновити coins.c
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72
coins.c
72
coins.c
@@ -7,8 +7,53 @@
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#define MAX_N 1024
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#define MAX_N 1024
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#define WORDS ((MAX_N / 64) + 1)
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#define WORDS ((MAX_N / 64) + 1)
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#define ITERATIONS 10000000
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#define ITERATIONS 10000000
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#define NUMBER 86
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#define NUMBER 999
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//Artem
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int main123(int n) {
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int a = 0;
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while (n != 0) {
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if (n - 50 >= 0) {
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n -= 50;
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a++;
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}
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else {
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if (n - 25 >= 0) {
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n -= 25;
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a++;
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}
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else {
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if (n - 10 >= 0) {
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n -= 10;
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a++;
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}
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else {
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if (n - 5 >= 0) {
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n -= 5;
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a++;
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}
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else {
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if (n - 2 >= 0) {
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n -= 2;
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a++;
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}
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else {
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if (n - 1 >= 0) {
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n -= 1;
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a++;
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}
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else {
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break;
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}
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}
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}
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}
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}
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}
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}
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return a;
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}
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// ==========================================
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// ==========================================
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// 1. TRADITIONAL DP (FOR-LOOP) APPROACH
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// 1. TRADITIONAL DP (FOR-LOOP) APPROACH
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// ==========================================
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// ==========================================
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@@ -51,7 +96,7 @@ int min_coins_bitwise(int n, int* coins, int num_coins) {
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if (n == 0) return 0;
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if (n == 0) return 0;
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if (n > MAX_N) return -1;
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if (n > MAX_N) return -1;
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uint64_t state[WORDS] = {0};
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uint64_t state[WORDS] = { 0 };
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state[0] = 1ULL;
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state[0] = 1ULL;
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uint64_t next_state[WORDS];
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uint64_t next_state[WORDS];
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@@ -87,8 +132,8 @@ int min_coins_bitwise_optimized(int n, int* coins, int num_coins) {
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int active_words = (n / 64) + 1;
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int active_words = (n / 64) + 1;
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// Allocate two arrays to act as our "Current" and "Next" states
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// Allocate two arrays to act as our "Current" and "Next" states
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uint64_t bufferA[WORDS] = {0};
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uint64_t bufferA[WORDS] = { 0 };
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uint64_t bufferB[WORDS] = {0};
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uint64_t bufferB[WORDS] = { 0 };
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bufferA[0] = 1ULL;
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bufferA[0] = 1ULL;
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@@ -142,7 +187,7 @@ int min_coins_bitwise_optimized(int n, int* coins, int num_coins) {
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// MAIN BENCHMARK
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// MAIN BENCHMARK
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// ==========================================
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// ==========================================
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int main() {
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int main() {
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int ukraine_coins[] = {1, 2, 5, 10, 25, 50};
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int ukraine_coins[] = { 1, 2, 5, 10, 25, 50 };
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int num_coins = 6;
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int num_coins = 6;
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int n = NUMBER; // 868 cents (Answer: 17 coins + 10 + 5 + 2 + 1 = 21 coins)
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int n = NUMBER; // 868 cents (Answer: 17 coins + 10 + 5 + 2 + 1 = 21 coins)
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@@ -158,7 +203,7 @@ int main() {
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total_sum += min_coins_dp(n, ukraine_coins, num_coins);
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total_sum += min_coins_dp(n, ukraine_coins, num_coins);
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}
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}
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end = clock();
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end = clock();
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cpu_time_used = ((double) (end - start)) / CLOCKS_PER_SEC;
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cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;
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printf("1. Traditional DP Time: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
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printf("1. Traditional DP Time: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
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// --- Benchmark Bitwise ---
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// --- Benchmark Bitwise ---
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@@ -168,7 +213,7 @@ int main() {
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total_sum += min_coins_bitwise(n, ukraine_coins, num_coins);
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total_sum += min_coins_bitwise(n, ukraine_coins, num_coins);
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}
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}
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end = clock();
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end = clock();
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cpu_time_used = ((double) (end - start)) / CLOCKS_PER_SEC;
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cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;
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printf("2. Native Bitwise Time: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
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printf("2. Native Bitwise Time: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
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// --- Benchmark Bitwise Optimized---
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// --- Benchmark Bitwise Optimized---
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@@ -178,7 +223,18 @@ int main() {
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total_sum += min_coins_bitwise_optimized(n, ukraine_coins, num_coins);
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total_sum += min_coins_bitwise_optimized(n, ukraine_coins, num_coins);
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}
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}
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end = clock();
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end = clock();
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cpu_time_used = ((double) (end - start)) / CLOCKS_PER_SEC;
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cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;
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printf("3. Optimized Bitwise Time: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
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printf("3. Optimized Bitwise Time: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
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//Artem
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total_sum = 0; // Reset
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start = clock();
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for (int i = 0; i < ITERATIONS; i++) {
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total_sum += main123(n);
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}
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end = clock();
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cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;
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printf("3. Artemtime: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
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return 0;
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return 0;
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}
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}
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