#include <bits/stdc++.h> using namespace std; #define int long long #define endl '\n' #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") #pragma GCC optimize("O3") class Solve { public: void solve() { int tuxn; cin >> tuxn; vector<pair<int,int>> tuxv(tuxn); for (int tuxi = 0; tuxi < tuxn; tuxi++) { int tuxa, tuxb; cin >> tuxa >> tuxb; tuxv[tuxi] = {tuxa, tuxb}; } sort(tuxv.begin(), tuxv.end()); int tuxans = LLONG_MIN; int tuxsum = 0, tuxl = 0; for (int tuxr = 0; tuxr < tuxn; tuxr++) { tuxsum += tuxv[tuxr].second; while (tuxv[tuxr].first - tuxv[tuxl].first > 1e18) { tuxsum -= tuxv[tuxl].second; tuxl++; } tuxans = max(tuxans, tuxsum - (tuxv[tuxr].first - tuxv[tuxl].first)); } cout << tuxans << endl; } }; signed main(signed argc, char* argv[]) { ios::sync_with_stdio(false); cin.tie(nullptr); if (argc > 1 && string(argv[1]) == "allyst") { freopen("in.case", "r", stdin); freopen("out.case", "w", stdout); } Solve tuxz; tuxz.solve(); }

art.cpp: In function 'int main(int, char**)':
art.cpp:48:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |         freopen("in.case", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
art.cpp:49:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |         freopen("out.case", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~