#include <stdio.h> int main() { int year=0; int month=0; int day=0; scanf("%d %d %d",&year,&month,&day); int months[12] = { 31,28,31,30,31,30,31,31,30,31,30,31 }; if((year%4==0&&year%100!=0)||(year%400==0)) { months[1]=29; } int i=0; int days=0...