Submission #1228741

#TimeUsernameProblemLanguageResultExecution timeMemory
1228741khoinguArt Exhibition (JOI18_art)C++20
100 / 100
176 ms12416 KiB
#include <bits/stdc++.h> #define ll long long #define int long long #define fi(i,a,b) for(int i = a; i <= b; i ++) #define fi first #define se second using namespace std; const long long maxN = 5e5 + 5, INF = 1e17; int n, p[maxN]; pair<int, int> x[maxN]; signed main() { if (fopen("task.inp", "r")) { freopen("task.inp", "r", stdin); freopen("task.out", "w", stdout); } ios_base::sync_with_stdio(false); cin.tie(0); cin >> n; for(int i = 1; i <= n; i ++) cin >> x[i].fi >> x[i].se; sort(x + 1, x + n + 1); p[1] = x[1].se; for(int i = 2; i <= n; i ++) p[i] = p[i - 1] + x[i].se; // (p[r] - p[l - 1]) - x[r].fi + x[l].fi // (p[r] - x[r].fi) + (x[l].fi - p[l - 1]) int ma = -INF, res = -INF; for(int i = 1; i <= n; i ++) { ma = max(ma, x[i].fi - p[i - 1]); res = max(res, ma + p[i] - x[i].fi); } cout << res; }

Compilation message (stderr)

art.cpp:5: warning: "fi" redefined
    5 | #define fi   first
      | 
art.cpp:4: note: this is the location of the previous definition
    4 | #define fi(i,a,b) for(int i = a; i <= b; i ++)
      | 
art.cpp: In function 'int main()':
art.cpp:15:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         freopen("task.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
art.cpp:16:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         freopen("task.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...