Submission #1114803

#	Time	Username	Problem	Language	Result	Execution time	Memory
1114803		LeonidCuk	Bouquet (EGOI24_bouquet)	C++17	100 / 100	166 ms	24376 KiB

Main

#include <bits/stdc++.h>
using namespace std;
vector<int>st;
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(2*i,l,m,x,k);
    else update(2*i+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(2*i+1,m+1,r,tl,tr));
}
int main()
{
    int n,sum=0,a,b;
    cin>>n;
    vector<pair<int,int>>v;
    st.resize(4*n+1);
    vector<int>dp(n),q[2*n+1];
    for(int i=0;i<n;i++)
    {
        cin>>a>>b;
        v.push_back({a,b});
    }
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<q[i].size();j++)
        {
            update(1,0,n-1,q[i][j],dp[q[i][j]]);
        }
        dp[i]=1+gsum(1,0,n-1,0,i-v[i].first-1);
        sum=max(sum,dp[i]);
        q[i+v[i].second+1].push_back(i);
    }
    cout<<sum;
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |         for(int j=0;j<q[i].size();j++)
      |                     ~^~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 16 / 16
• Subtask 3: 28 / 28
• Subtask 4: 18 / 18
• Subtask 5: 30 / 30