Submission #926137

#	Time	Username	Problem	Language	Result	Execution time	Memory
926137		haru09	Art Exhibition (JOI18_art)	C++17	100 / 100	177 ms	20908 KiB

art

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define se second
#define task "code"

const int ar=5e5+5;
const ll mod=1e9+7;
int n;
pair<ll,int> a[ar];
ll ans=-1e18;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    if (fopen(task".inp","r"))
    {
        freopen(task".inp","r",stdin);
        freopen(task".out","w",stdout);
    }
    cin>>n;
    for (int i=1;i<=n;i++)
    {
        cin>>a[i].fi>>a[i].se;
    }
    sort(a+1,a+n+1);
    ll ma=0;
    for (int i=1;i<=n;i++)
    {
        ma=max(ma+a[i].se,a[i].fi+a[i].se);
        ans=max(ans,ma-a[i].fi);
    }
    cout<<ans;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:19:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
art.cpp:20:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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