Submission #1268533

#	Time	Username	Problem	Language	Result	Execution time	Memory
1268533		zagaro	Art Exhibition (JOI18_art)	C++17	100 / 100	655 ms	44012 KiB

art

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
/**zagaro & lauren <3**/
#define mod 1000000007 //1e9 + 7
#define pi acos(-1)
#define wl while
#define str string
#define ENDL "\n"
#define sal ' '
#define tp_set ll
#define prc(n) cout.precision(n);cout<<fixed;
#define ord_set tree<tp_set, null_type, less<tp_set>, rb_tree_tag, tree_order_statistics_node_update>
typedef long long ll;
typedef bool bl;
typedef char car;
using namespace std;
using namespace __gnu_pbds;
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll n, r=0, a, b;
    cin>>n;
    vector<pair<ll,ll> > vec(1, {0, 0});
    vector<ll> val;
    map<ll,ll> mp;
    for(int i=1;i<=n;i++){
        cin>>a>>b;
        if(mp[a] == 0)val.push_back(a);
        mp[a]+=b;
    }
    for(int i=0;i<val.size();i++)vec.push_back({val[i], mp[val[i]]});
    a=0;
    sort(vec.begin(), vec.end());
    vec[0].first = vec[1].first;
    for(int i=1;i<vec.size();i++){
        if(a + (vec[i].second)-(vec[i].first-vec[i-1].first) > vec[i].second)a += (vec[i].second)-(vec[i].first-vec[i-1].first);
        else a = vec[i].second;
        r = max(r, max(a, vec[i].second));
    }
    cout<<r<<ENDL;
    return 0;
}

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