#include <stdio.h> int main() { int a, b,c; int month[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; while (scanf("%d %d %d", &a,&b,&c) != EOF) { if (a%4==0&&a%100!=0||a%400==0) { month[2]=29; } int sum=0; fo...