Submission #1105193

#	Time	Username	Problem	Language	Result	Execution time	Memory
1105193		sktodow	Art Exhibition (JOI18_art)	C++17	0 / 100	1 ms	336 KiB

art

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
     
#define int long long 
#define pb push_back
#define mid (l+(r-l)/2)
#define f first
#define s second
const int N=2505;
const int MOD=1e9+7;
const long long inf=2e18+5;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> indexed_set;

void io(string name = ""){ 
    freopen((name+".in").c_str(), "r", stdin);
    freopen((name+".out").c_str(), "w", stdout);
}

int32_t main(){
    //io("local");
    ios_base::sync_with_stdio(0); cin.tie(0);
    
    int n; cin>>n;
    vector<array<int,2>>v(n);
    for(int i=0;i<n;i++){
        cin>>v[i][0]>>v[i][1];
    }
    sort(v.begin(),v.end());
    int ans=0;
    int curr=0;
    for(int i=0;i<n;i++){
        curr+=v[i][1];
        ans=max(ans,curr-v[i][0]+v[0][0]);
    }
    for(int i=0;i<n-1;i++){
        curr-=v[i][1];
        ans=max(ans,curr-v[n-1][0]+v[i][0]);
    }
    cout<<ans;
    return 0;
}

Compilation message (stderr)

art.cpp: In function 'void io(std::string)':
art.cpp:17:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |     freopen((name+".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
art.cpp:18:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     freopen((name+".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50