#include <bits/stdc++.h> using namespace std; #define int long long mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count()); void Solve() { int n; cin>>n; vector <pair<int, int>> v; int ma = 0; for (int i=0; i<n; i++) { int m, t; cin>>m>>t; v.push_back({m, t}); ma = max(ma, t); } sort(v.begin(), v.end()); int psum[n+1]; psum[0] = 0; for (int i=1; i<=n; i++) { psum[i] = psum[i-1] + v[i-1].second; } //int ma = -1e9; int mi = 1e18; int pos = 0; for (int i=0; i<n; i++) { int v2 = psum[i]-v[i].first; int v1 = psum[i+1] - v[i].first; ma = max(ma, v1-mi); mi = min(mi, v2); } cout<<ma<<"\n"; } int32_t main() { auto begin = std::chrono::high_resolution_clock::now(); ios_base::sync_with_stdio(0); cin.tie(0); int t = 1; //cin >> t; for(int i = 1; i <= t; i++) { //cout << "Case #" << i << ": "; Solve(); } auto end = std::chrono::high_resolution_clock::now(); auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin); cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; return 0; }

art.cpp: In function 'void Solve()':
art.cpp:31:9: warning: unused variable 'pos' [-Wunused-variable]
   31 |     int pos = 0;
      |         ^~~