Submission #1420163

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Source Code Expand

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

int n, ng[300], ngs[301];

void no(void) {
    printf("NO\n");
    exit(0);
}

int main(void) {
    int i, jump = 0;
    
    scanf("%d", &n);
    
    for (i = 0; i < 3; ++i) {
        scanf("%d", &ng[i]);
        ngs[ng[i]] = 1;
    }
    
    i = n;
    
    while (1) {
        if (ngs[i]) no();
        
        if (i == 0) {
            break;
        } else if (i <= 3) {
            i = 0;
            ++jump;
            continue;
        }
        
        if (!ngs[i - 3]) {
            i -= 3;
            ++jump;
        } else if (!ngs[i - 2]) {
            i -= 2;
            ++jump;
        } else if (!ngs[i - 1]) {
            i -= 1;
            ++jump;
        } else no();
    }
    
    if (jump > 100) no();
    printf("YES\n");
    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:14:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ^
./Main.c:17:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &ng[i]);
         ^

Judge Result