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Submission #590310

# Submission time Handle Problem Language Result Execution time Memory
590310 2022-07-05T19:51:25 Z mpawicka_77 Potatoes and fertilizers (LMIO19_bulves) C++14
0 / 100
 108 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;
stack<pair<int,int>>S[500003];
stack<int>nad,nad2;
int T[500003];
int main()
{
    int n;
    cin>>n;
    for(int i=1; i<=n; i++)
    {
        int a,b;
        cin>>a>>b;
        T[i]=a-b;
    }
    for(int i=1; i<=n; i++)
    {
        if(T[i]>0) nad.push(i);
        while (T[i]<0 && !nad.empty())
        {
            int k=nad.top(),w=min(-T[i],T[k]);
            T[k]-=w, T[i]+=w;
            if(T[k]==0) nad.pop();
            S[i].push({k,w});
        }
    }
    long long ans=0;
    for(int i=n; i>=1; i--)
    {
        if(T[i]>0) nad2.push(i);
        while(T[i]<0 && !nad2.empty())
        {
            int k=nad2.top(),w=min(-T[i],T[k]);
            T[k]-=w, T[i]+=w, ans+=(k-i)*w;;
            if(T[k]==0) nad2.pop();
        }
        while(!S[i].empty() && !nad2.empty())
        {
            int k1=S[i].top().first,w=S[i].top().second,k=nad2.top();
            if(k-i<=i-k1)
            {
                int v=min(w,T[k]);
                w-=v, T[k]-=v, T[k1]+=v;
                if(T[k]==0) nad2.pop();
                S[i].pop();
                ans+=(k-i)*v;
                if(w!=0) S[i].push({k1,w});
            }
            else break;
        }
    }
    for(int i=1; i<=n; i++)
    {
        while(!S[i].empty())
        {
            int k=S[i].top().first, w=S[i].top().second;
            ans+=abs(k-i)*w;
            S[i].pop();
        }
    }
    cout<<ans;
    return 0;
}

Subtask #1
0 / 24.0

# Verdict Execution time Memory Grader output
1 Runtime error 108 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 108 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 108 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 108 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Runtime error 108 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -