Submission #1009732

#	Time	Username	Problem	Language	Result	Execution time	Memory
1009732		kolorvxl	Giraffes (JOI22_giraffes)	C11	0 / 100	0 ms	348 KiB

giraffes

#include <stdio.h>
#include <stdlib.h>

int cost(int l, int *arr) {
    if (l <= 3) {
        return 0;
    }
    
    int *iarr;
    iarr = (int*)malloc(sizeof(int) * l);
    
    for (int i = 0; i < l; i++) {
        iarr[i] = arr[i];
        // printf("%d ", iarr[i]);
    }
    // printf("\n");
    
    int max = 0;
    int maxi = 0;
    int min = 10000;
    int mini = 0;
    for (int i = 0; i < l; i++) {
        if (max < iarr[i]) {
            max = iarr[i];
            maxi = i;
        }
        
        if (min > iarr[i]) {
            min = iarr[i];
            mini = i;
        }
    }
    
    
    if (mini == 0 || maxi == 0) {
        int v = cost(l - 1, iarr + 1);
        free(iarr);
        return v;
    }
    
    if (mini == l - 1 || maxi == l - 1) {
        int v = cost(l - 1, iarr);
        free(iarr);
        return v;
    }
    
    int v = 10000;
    int k = 0;
    
    int a, b, t;
    
    a = 0;
    b = mini;
    t = iarr[a]; iarr[a] = iarr[b]; iarr[b] = t;
    k = cost(l - 1, iarr + 1);
    if (v > k) v = k;
    t = iarr[a]; iarr[a] = iarr[b]; iarr[b] = t;
    
    a = 0;
    b = maxi;
    t = iarr[a]; iarr[a] = iarr[b]; iarr[b] = t;
    k = cost(l - 1, iarr + 1);
    if (v > k) v = k;
    t = iarr[a]; iarr[a] = iarr[b]; iarr[b] = t;
    
    a = l - 1;
    b = mini;
    t = iarr[a]; iarr[a] = iarr[b]; iarr[b] = t;
    k = cost(l - 1, iarr);
    if (v > k) v = k;
    t = iarr[a]; iarr[a] = iarr[b]; iarr[b] = t;
    
    a = l - 1;
    b = maxi;
    t = iarr[a]; iarr[a] = iarr[b]; iarr[b] = t;
    k = cost(l - 1, iarr);
    if (v > k) v = k;
    t = iarr[a]; iarr[a] = iarr[b]; iarr[b] = t;
    
    free(iarr);
    return v + 1;
}

int main() {
    int n;
    int arr[13];
    
    scanf("%d", &n);
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }
    
    printf("%d", cost(n, arr) * 2);
    
    return 0;
}

Compilation message (stderr)

giraffes.c: In function 'main':
giraffes.c:88:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |     scanf("%d", &n);
      |     ^~~~~~~~~~~~~~~
giraffes.c:90:9: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   90 |         scanf("%d", &arr[i]);
      |         ^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 22
• Subtask 3: 0 / 27
• Subtask 4: 0 / 41