int main() { int year = 0; int month = 0; int day = 0; int year1 = 0; int day1 = 0; int month1 = 0; scanf("%d %d %d", &year, &month, &day); scanf("%d %d %d", &year1, &month1, &day1); if (year1 > year) { printf("yes"); } if (year1 == year) { if (month1 > month) { printf("yes"); } else if (month1 == month) { if (day1 >= day) printf("yes"); else { printf("no"); } } } if (year1 < year) printf("no"); return 0; }直接笨方法