Submission #441194

#	Time	Username	Problem	Language	Result	Execution time	Memory
441194		julian33	Art Exhibition (JOI18_art)	C++14	100 / 100	235 ms	28716 KiB

art

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
    cerr<<vars<<" = ";
    string delim="";
    (...,(cerr<<delim<<values,delim=", "));
    cerr<<"\n";
}
#else
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {}
#endif

#define pb push_back
#define sz(x) (int)(x.size())
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
template<typename T> inline void maxa(T& a,T b){a=max(a,b);}
template<typename T> inline void mina(T& a,T b){a=min(a,b);}


int main(){
    cin.sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    #ifdef LOCAL
        freopen("input.txt","r",stdin);
        freopen("output.txt","w",stdout);
    #endif

    int n; cin>>n;
    vector<pll> art;
    ll sum=0;
    for(int i=0;i<n;i++){
        ll a,b; cin>>a>>b;
        sum+=b;
        art.pb({a,b});
    }
    sort(art.begin(),art.end());
    vector<ll> psa(n+1),pref(n+1);
    for(int i=1;i<=n;i++){
        psa[i]=art[i-1].second+psa[i-1];
    }
    pref[0]=-art[0].first;
    for(int i=1;i<n;i++){
        pref[i]=min(psa[i]-art[i].first,pref[i-1]);
    }
    ll ans=0;
    for(int i=n;i>=1;i--){
        maxa(ans,psa[i]-art[i-1].first-pref[i-1]);
    }
    cout<<ans<<"\n";
}

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