#include <iostream> using namespace std; bool isRunNian(int year){ if(year%400 == 0)return 1; if(year%4 == 0 && year%100 !=0)return 1; return 0; } int main() { int n;cin>>n; while(n--){ int year,month,day; int arr[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; cin>>year>&g...