运行结果只有80分
感觉逻辑正确 为啥不对呢
```c++
#include <iostream>
using namespace std;
int main()
{
int x,y,m,day;
int a[12]={31,29,31,30,31,30,31,31,30,31,30,31};
int b[12]={31,28,31,30,31,30,31,31,30,31,30,31};
cin >> x;
cin >> y>>m>>day;
day=day+x;
if(y%4==0&&y%100!=0||y%400==0)
{
while(day>a[m-1]){
if(y%4==0&&y%100!=0||y%400==0){
day=day-a[m-1];
m++;
y=y+m/12;
m=m%12;}
else {
day=day-b[m-1];
m++;
y=y+m/12;
m=m%12;
}
}
}
else
{
while(day>b[m-1]){
if(y%4==0&&y%100!=0||y%400==0){
day=day-a[m-1];
m++;
y=y+m/12;
m=m%12;}
else {
day=day-b[m-1];
m++;
y=y+m/12;
m=m%12;
}
}
}
cout<<y<<" "<<m<<" "<<day;
return 0;
}
```