Submission #968565

#	Time	Username	Problem	Language	Result	Execution time	Memory
968565		tset	Art Exhibition (JOI18_art)	C++14	100 / 100	147 ms	23012 KiB

art

#include<bits/stdc++.h>

using namespace std;

#define int long long

const int INF = 1e18 +42;

signed main()
{
    int N;
    scanf("%lld", &N);
    vector<pair<int, int>> tab;
    for(int iTab = 0; iTab < N; iTab++)
    {
        int A, B;
        scanf("%lld%lld", &A, &B);
        tab.push_back({A, B});
    }
    tab.push_back({-INF, -INF});
    sort(tab.begin(), tab.end());

    vector<int> cumulS(N+1, 0);
    for(int i= 1; i<=N; i++)
    {
        cumulS[i] = cumulS[i-1] + tab[i].second;
    }
    
    vector<int> bonus(N+1);
    for(int i=1; i<=N; i++)
    {
        bonus[i] = max(tab[i].first - cumulS[i-1], bonus[i-1]);
    }
    int ans = -INF;

    for(int iMax=1; iMax<= N; iMax++)
    {
        ans = max(ans, cumulS[iMax] + bonus[iMax] - tab[iMax].first);
    }
    printf("%lld\n", ans);

}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%lld", &N);
      |     ~~~~~^~~~~~~~~~~~
art.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |         scanf("%lld%lld", &A, &B);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 50 / 50