for (vector<int> v : vs) {
sort(v.begin(), v.end());
}
#include <bits/stdc++.h>
using namespace std;
int solution(vector<vector<int>> sizes) {
int w = 0;
int h = 0;
for (vector<int> size : sizes) {
if (size[0] > size[1]) {
w = max(w, size[0]);
h = max(h, size[1]);
}
else {
w = max(w, size[1]);
h = max(h, size[0]);
}
}
return w * h;
}