#include <iostream> using namespace std; int days[] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 }; int main() { int year, month, day, n, cnt; cin >> n; for (int i = 0; i < n; ++i) { cin >> year >> month >> day >> cnt; while (cnt != 0) { if (year % 400 == 0 || (ye...