#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<int> tuxa(tuxn), tuxb(tuxn); for (int tuxi = 0; tuxi < tuxn; tuxi++) cin >> tuxa[tuxi] >> tuxb[tuxi]; int tuxans = LLONG_MIN; for (int tuxi = 0; tuxi < tuxn; tuxi++) { for (int tuxj = tuxi; tuxj < tuxn; tuxj++) { int tuxamin = LLONG_MAX, tuxamax = LLONG_MIN, tuxs = 0; for (int tuxk = tuxi; tuxk <= tuxj; tuxk++) { tuxamin = min(tuxamin, tuxa[tuxk]); tuxamax = max(tuxamax, tuxa[tuxk]); tuxs += tuxb[tuxk]; } tuxans = max(tuxans, tuxs - (tuxamax - tuxamin)); } } 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:42:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |         freopen("in.case", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
art.cpp:43:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |         freopen("out.case", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~