문제
풀이
#include <iostream>
using namespace std;
void solve(void) {
int n, c; cin >> n >> c;
int a = n, b = n;
while (c--) {
int x, y; cin >> x >> y;
if (x >= a || y >= b) continue;
if (x * b >= a * y) a = x;
else b = y;
}
cout << a * b;
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
solve();
return 0;
}