Оновити coins.c

coins.c

@@ -7,15 +7,60 @@
 #define MAX_N 1024
 #define WORDS ((MAX_N / 64) + 1)
 #define ITERATIONS 10000000
-#define NUMBER 86
+#define NUMBER 999
 
+//Artem
+
+int main123(int n) {
+    int a = 0;
+    while (n != 0) {
+        if (n - 50 >= 0) {
+            n -= 50;
+            a++;
+        }
+        else {
+            if (n - 25 >= 0) {
+                n -= 25;
+                a++;
+            }
+            else {
+                if (n - 10 >= 0) {
+                    n -= 10;
+                    a++;
+                }
+                else {
+                    if (n - 5 >= 0) {
+                        n -= 5;
+                        a++;
+                    }
+                    else {
+                        if (n - 2 >= 0) {
+                            n -= 2;
+                            a++;
+                        }
+                        else {
+                            if (n - 1 >= 0) {
+                                n -= 1;
+                                a++;
+                            }
+                            else {
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    return a;
+}
 // ==========================================
 // 1. TRADITIONAL DP (FOR-LOOP) APPROACH
 // ==========================================
 int min_coins_dp(int n, int* coins, int num_coins) {
     int dp[MAX_N + 1];
     dp[0] = 0;
-    
+
     for (int i = 1; i <= n; i++) {
         dp[i] = 1000000; // Represent "infinity"
         for (int c = 0; c < num_coins; c++) {
@@ -39,7 +84,7 @@ void shift_left_and_or(uint64_t* dest, const uint64_t* src, int shift) {
     for (int i = WORDS - 1; i >= word_shift; i--) {
         int src_idx = i - word_shift;
         uint64_t val = src[src_idx] << bit_shift;
-        
+
         if (bit_shift > 0 && src_idx > 0) {
             val |= (src[src_idx - 1] >> (64 - bit_shift));
         }
@@ -51,13 +96,13 @@ int min_coins_bitwise(int n, int* coins, int num_coins) {
     if (n == 0) return 0;
     if (n > MAX_N) return -1;
 
-    uint64_t state[WORDS] = {0}; 
-    state[0] = 1ULL; 
+    uint64_t state[WORDS] = { 0 };
+    state[0] = 1ULL;
     uint64_t next_state[WORDS];
-    
+
     int steps = 0;
     int target_word = n / 64;
-    int target_bit  = n % 64;
+    int target_bit = n % 64;
     uint64_t target_mask = 1ULL << target_bit;
 
     while (1) {
@@ -85,13 +130,13 @@ int min_coins_bitwise_optimized(int n, int* coins, int num_coins) {
 
     // How many 64-bit blocks do we ACTUALLY need for this 'n'?
     int active_words = (n / 64) + 1;
-    
+
     // Allocate two arrays to act as our "Current" and "Next" states
-    uint64_t bufferA[WORDS] = {0};
-    uint64_t bufferB[WORDS] = {0};
-    
-    bufferA[0] = 1ULL; 
-    
+    uint64_t bufferA[WORDS] = { 0 };
+    uint64_t bufferB[WORDS] = { 0 };
+
+    bufferA[0] = 1ULL;
+
     // We will use pointers so we never have to use memcpy()!
     uint64_t* state = bufferA;
     uint64_t* next_state = bufferB;
@@ -102,7 +147,7 @@ int min_coins_bitwise_optimized(int n, int* coins, int num_coins) {
 
     while (1) {
         steps++;
-        
+
         // Manual clearing is faster than memset because we ONLY clear active_words
         for (int i = 0; i < active_words; i++) {
             next_state[i] = 0;
@@ -118,7 +163,7 @@ int min_coins_bitwise_optimized(int n, int* coins, int num_coins) {
             for (int i = active_words - 1; i >= w_shift; i--) {
                 int src_idx = i - w_shift;
                 uint64_t val = state[src_idx] << b_shift;
-                
+
                 if (b_shift > 0 && src_idx > 0) {
                     val |= (state[src_idx - 1] >> (64 - b_shift));
                 }
@@ -142,10 +187,10 @@ int min_coins_bitwise_optimized(int n, int* coins, int num_coins) {
 // MAIN BENCHMARK
 // ==========================================
 int main() {
-    int ukraine_coins[] = {1, 2, 5, 10, 25, 50};
+    int ukraine_coins[] = { 1, 2, 5, 10, 25, 50 };
     int num_coins = 6;
     int n = NUMBER; // 868 cents (Answer: 17 coins + 10 + 5 + 2 + 1 = 21 coins)
-    
+
     printf("Evaluating N = %d over %d iterations...\n\n", n, ITERATIONS);
 
     clock_t start, end;
@@ -158,7 +203,7 @@ int main() {
         total_sum += min_coins_dp(n, ukraine_coins, num_coins);
     }
     end = clock();
-    cpu_time_used = ((double) (end - start)) / CLOCKS_PER_SEC;
+    cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;
     printf("1. Traditional DP Time: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
 
     // --- Benchmark Bitwise ---
@@ -168,17 +213,28 @@ int main() {
         total_sum += min_coins_bitwise(n, ukraine_coins, num_coins);
     }
     end = clock();
-    cpu_time_used = ((double) (end - start)) / CLOCKS_PER_SEC;
+    cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;
     printf("2. Native Bitwise Time: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
 
-        // --- Benchmark Bitwise Optimized---
+    // --- Benchmark Bitwise Optimized---
     total_sum = 0; // Reset
     start = clock();
     for (int i = 0; i < ITERATIONS; i++) {
         total_sum += min_coins_bitwise_optimized(n, ukraine_coins, num_coins);
     }
     end = clock();
-    cpu_time_used = ((double) (end - start)) / CLOCKS_PER_SEC;
+    cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;
     printf("3. Optimized Bitwise Time: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
+
+    //Artem
+    total_sum = 0; // Reset
+    start = clock();
+    for (int i = 0; i < ITERATIONS; i++) {
+        total_sum += main123(n);
+
+    }
+    end = clock();
+    cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;
+    printf("3. Artemtime: %f seconds (Answer: %d)\n", cpu_time_used, total_sum / ITERATIONS);
     return 0;
 }