">using namespace std; int month[13][2] = {{0,0},{31,31},{28,29},{31,31},{30,30},{31,31}, {30,30},{31,31},{31,31},{30,30},{31,31},{30,30},{31,31}}; bool run(int y) { if(y%4==0&&y%100!=0||y%400==0) return true; return false; } int main() { int m,y,mon...