题解 | #小乐乐是否被叫家长#

#include <stdio.h>

int main() {
    int chin = 0;
    int math = 0;
    int engli = 0;

    while (3 == scanf("%d %d %d", &math, &chin, &engli))
    {
        printf("%s\n", ( (chin + math + engli) / 3 < 60? "YES" : "NO"));
    }
    
    return 0;
}