Submission #1303978

#	Time	Username	Problem	Language	Result	Execution time	Memory
1303978		yusifm	Index (COCI21_index)	C++20	20 / 110	2594 ms	1468 KiB

index

#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#define ll long long
#define str string
#define pb push_back
#define pf push_front
#define in insert
#define all(v) v.begin(),v.end()
const int sz=1000000,INF=1000000000;
using namespace std;
void solve()
{
    ll n,m,num,num1,num2,cnt,ans;
    cin>>n>>m;
    vector<ll>nums,Nums;
    for(int i=0;i<n;i++)
    {
        cin>>num;
        nums.pb(num);
    }
    for(int i=0;i<m;i++)
    {
        Nums.clear();
        cin>>num1>>num2;
        for(int j=num1-1;j<num2;j++)
        {
            Nums.pb(nums[j]);
        }
        sort(all(Nums));
        for(int j=num2-num1+1;j>=1;j--)
        {
            cnt=Nums.end()-lower_bound(all(Nums),j);
            if(cnt>=j)
            {
                ans=j;
                break;
            }
        }
        cout<<ans<<"\n";
    }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);
    ll t=1;
    //cin>>t;
    while(t--)
    {
        solve();
    }
}

• Subtask 1: 20 / 20
• Subtask 2: 0 / 40
• Subtask 3: 0 / 50