题解 | #牛牛的计划#

#include <stdio.h>
typedef unsigned int uint;

int main() {
    uint y = 0, y1 = 0;
    uint m = 0, m1 = 0;
    uint d = 0, d1 = 0;

    while (EOF != scanf("%u %u %u %u %u %u", &y, &m, &d, &y1, &m1, &d1)) {
        if (y1 > y) {
            printf("yes");
        } 
        else if (y1 == y) 
        {
            if (m1 > m)
            {
                printf("yes");
            }
            else if (m1 == m)
            {
                if (d1 >= d)
                {
                    printf("yes");
                }
                else
                {
                    printf("no");
                }
            }
            else 
            {
                printf("no");
            }
        }
        else
        {
            printf("no");
        }
        printf("\n");
    }
    
    return 0;
}