#include <iostream> using namespace std; void oldBill(int n, int m); int main() { int a, b, c, d; while (scanf("%d", &a) != EOF) { scanf("%d %d %d", &b, &c, &d); oldBill(b * 100 + c * 10 + d, a); } } void oldBill(int n, int m) { int maxNum = 0, maxI = 0, max...