Submission #919089

#	Time	Username	Problem	Language	Result	Execution time	Memory
919089		imarn	Potatoes and fertilizers (LMIO19_bulves)	C++14	100 / 100	173 ms	17264 KiB

bulves

#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vvi vector<vi>
#define vp vector<pii>
using namespace std;
priority_queue<ll>q;
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n;cin>>n;
    ll dp[n+1]={0};
    for(int i=1,a,b;i<=n;i++){
        cin>>a>>b;dp[i]=a-b+dp[i-1];
    }ll res=0;
    for(int i=1;i<n;i++){
        if(dp[i]<0)res-=dp[i],dp[i]=0;
        res+=dp[i];
        q.push(dp[i]);
        q.push(dp[i]);
        q.pop();
    }
    while(!q.empty()){
        res-=min(dp[n],q.top());q.pop();
    }cout<<res;
}

• Subtask 1: 24 / 24
• Subtask 2: 10 / 10
• Subtask 3: 20 / 20
• Subtask 4: 10 / 10
• Subtask 5: 36 / 36