#include <iostream> using namespace std; int main() { int _year = 0; int _day = 0; while(scanf("%d%d",&_year,&_day)!=EOF) { int arr[13] = {-1,31,28,31,30,31,30,31,31,30,31,30,31}; if(_year%400==0 || (_year%4==0 && _year%100!=0)) { ...