Submission #1114333

#	Time	Username	Problem	Language	Result	Execution time	Memory
1114333		vjudge1	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	100 / 100	1132 ms	104144 KiB

sortbooks

#include <bits/stdc++.h>
using namespace std;
vector<int>st,v,res;
void update(int i,int l,int r,int x,int k)
{
    if(l==r)
    {
        st[i]=k;
        return;
    }
    int m=(l+r)/2;
    if(x<=m)update(i*2,l,m,x,k);
    else update(i*2+1,m+1,r,x,k);
    st[i]=max(st[2*i],st[2*i+1]);
}
int gsum(int i,int l,int r,int tl,int tr)
{
    if(l>tr||tl>r||l>r)return 0;
    if(tl<=l&&r<=tr)return st[i];
    int m=(l+r)/2;
    return max(gsum(2*i,l,m,tl,tr),gsum(i*2+1,m+1,r,tl,tr));
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n,m,a,b,c;
    cin>>n>>m;
    vector<pair<int,pair<int,int>>>q[n];
    res.resize(m);
    st.resize(4*n+1);
    for(int i=0;i<n;i++)
    {
        cin>>a;
        v.push_back(a);
    }
    for(int i=0;i<m;i++)
    {
        cin>>a>>b>>c;
        q[b-1].push_back({i,{a-1,c}});
    }
    stack<int>s;
    for(int i=0;i<n;i++)
    {
        while(!s.empty())
        {
            if(v[s.top()]<=v[i])s.pop();
            else break;
        }
        if(!s.empty())update(1,0,n-1,s.top(),v[s.top()]+v[i]);
        s.push(i);
        for(int j=0;j<q[i].size();j++)
        {
            if(gsum(1,0,n-1,q[i][j].second.first,i)<=q[i][j].second.second)res[q[i][j].first]=1;
            else res[q[i][j].first]=0;
        }
    }
    for(int i=0;i<m;i++)
    {
        cout<<res[i]<<"\n";
    }
}

Compilation message (stderr)

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:52:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |         for(int j=0;j<q[i].size();j++)
      |                     ~^~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 13 / 13
• Subtask 4: 17 / 17
• Subtask 5: 30 / 30
• Subtask 6: 23 / 23