#include <stdio.h> int main() { int y = 0,m = 0,d = 0; //开始学习时间 int y1 =0, m1 =0,d1 =0;//询问时间 scanf("%d %d %d",&y,&m,&d); scanf("%d %d %d",&y1,&m1,&d1); if (y1>y) { //年 printf("yes"); } else if (y1<y) {...