#include <stdio.h> int main() { int yy,mm; while(scanf("%d %d",&yy,&mm)!=EOF) { if(mm==2&&(yy % 400 == 0 || yy % 4 == 0 && yy % 100 != 0)) { printf("29\n"); } else { int arr[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; printf("%d\n",arr[mm]...