#include <stdio.h> int main() { int a, b, c; scanf("%d %d %d", &a, &b, &c); int sum,d; if(a % 4 == 0 && a % 100 != 0) d = 1; else if(a % 400 == 0) d = 1; else d = 0; switch(b){ case 1: sum = 0 + c; break; case 2: sum = 31 + c; brea...