提交时间:2025-01-01 10:56:51
运行 ID: 307154
#include<iostream> using namespace std; int main(){ int y,m,d; cin>>y>>m>>d; if(d>1)cout<<y<<" "<<m<<" "<<d-1; else if(d==1){ else if(m==2||m==4||m==6||m==8||m==9||m==11)cout<<y<<" "<<m-1<<" "<<31; else if(m==5||m==7||m==10||m==12)cout<<y<<" "<<m-1<<" "<<30; else if(m==3){ else if(y%4==0&&y%100!=0||y%400==0)cout<<y<<2<<29; else cout<<y<<2<<28; } } else if(m==1&&d==1)cout<<y-1<<" "<<12<<" "<<31; return 0; }