#include <bits/stdc++.h> using namespace std; void solve() { int n; cin >> n; vector<int> mx(11); for(int i = 0; i < n; i++) { int p, s; cin >> p >> s; mx[p] = max(mx[p], s); } cout << accumulate(begin(mx), begin(mx) + 9, 0LL) << endl; } signed main() { int t; cin >> t; while(t--) { solve(); } }
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