Submission #1273278

#	Time	Username	Problem	Language	Result	Execution time	Memory
1273278		nlhuy	Art Exhibition (JOI18_art)	C++20	100 / 100	124 ms	8260 KiB

art

#include<bits/stdc++.h>
using namespace std;

#define ll long long
#define fi first
#define se second
#define Task "test"

typedef pair<ll,ll>ii;

const int MOD = 1e9+7;
const int INF = 1e9+7;
const int Maxn = 5e5+7;
const int di[] = {0, 0, -1, 1};
const int dj[] = {-1, 1, 0, 0};

ii a[Maxn];

void run_case(){
    int n;
    cin>>n;
    for(int i=1;i<=n;i++) cin>>a[i].fi>>a[i].se;
    sort(a+1,a+n+1);
    ll Min=INF;
    ll ans=0,sum=0;
    for(int i=1;i<=n;i++){
        Min=min(Min,sum-a[i].fi);
        sum+=a[i].se;
        ans=max(ans,sum-a[i].fi-Min);
    }
    cout<<ans;
}
int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    if (fopen(Task ".inp", "r"))
    {
        freopen(Task ".inp", "r", stdin);
        freopen(Task ".out", "w", stdout);
    }
    int t = 1;
    //cin >> t;
    while(t--){
        run_case();
    }
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:37:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         freopen(Task ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
art.cpp:38:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |         freopen(Task ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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