#include <cstdio> int main(){ int year,mon,day; int totalday[13] = {0}; int monday[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31}; for (int i = 2; i <= 12; ++i) { totalday[i] = totalday[i - 1] + monday[i - 1]; } while (scanf("%d%d%d",&year,&mon,&day) != EOF...