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Submission #86761

# Submission time Handle Problem Language Result Execution time Memory
86761 2018-11-27T09:41:57 Z duy_tran Divide and conquer (IZhO14_divide) C++14
0 / 100
 17 ms 3500 KB 
#include<bits/stdc++.h>
using namespace std;

const int maxn=(int)1e5+50;
int n,x[maxn],bit[2*maxn];
long long gold[maxn],energy[maxn];
vector<long long> gt;

void Up(int id,int gt)
{
     if(id==0)return;

     for(;id<=2*n+2;id+=id&-id)bit[id]=min(bit[id],gt);
}

int Get(int id)
{
    if(id==0) return (int)1e6;

    int res=(int)1e6;

    for(;id>0;id-=id&-id)res=min(res,bit[id]);

    return res;
}

int main()
{
    cin>>n;

    memset(bit,(int)1e6,sizeof(bit));

    for(int i=1;i<=n;++i)
    {
        long long g,d;
        cin>>x[i]>>g>>d;

        gold[i]=gold[i-1]+g;
        energy[i]=energy[i-1]+d;

        gt.push_back(energy[i]-x[i]);
        gt.push_back(energy[i-1]-x[i]);
    }

    sort(gt.begin(),gt.end());

    gt.erase(unique(gt.begin(),gt.end()));

    long long Max=0;

    for(int i=1;i<=n;++i)
    {
        Max=max(Max,gold[i]-gold[i-1]);

        int pos=lower_bound(gt.begin(),gt.end(),energy[i]-x[i])-gt.begin()+1;

        int l=Get(pos);

        if(l!=(int)1e6)Max=max(Max,gold[i]-gold[l-1]);

        pos=lower_bound(gt.begin(),gt.end(),energy[i-1]-x[i])-gt.begin()+1;

        Up(pos,i);
    }

    cout<<Max;
}

Subtask #1
0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 2168 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #2
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2296 KB Output is correct
2 Correct 3 ms 2360 KB Output is correct
3 Runtime error 5 ms 2452 KB Execution killed with signal 11 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #3
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 2656 KB Output is correct
2 Correct 15 ms 3080 KB Output is correct
3 Runtime error 17 ms 3500 KB Execution killed with signal 11 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -