#include <stdio.h> int main() { int a, b; while (scanf("%d %d",&a,&b)!=EOF){ if(a%400==0||(a%4==0&&a%100!=0)){ int arr[12]={31,29,31,30,31,30,31,31,30,31,30,31}; printf("%d\n",arr[b-1]); } else { int...