Submission #473663

#	Time	Username	Problem	Language	Result	Execution time	Memory
473663		MamdouhN	Doktor (COCI17_doktor)	C++17	90 / 100	945 ms	58680 KiB

doktor

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"

map<pair<int,int>,int>idk;
map<pair<int,int>,pair<int,int>>k;

main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin>>n;
    int ar[n];
    int doingnothing=0;
    vector<int>lol;
    lol.push_back(0);
    for(int i=0;i<n;i++)
    {
        cin>>ar[i];
        if(ar[i]==i+1)doingnothing++;
        int x = min(ar[i]-1,i);
        int y = max(ar[i]-1,i);
        int dist = min(x - 0 , n - y-1);
        //cout<<x-dist<<" "<<y+dist<<endl;
        idk[{ x-dist , y+dist }]++;
        if(y>k[{ x-dist , y+dist }].second)k[{ x-dist , y+dist }] = {x,y};
        lol.push_back(doingnothing);
    }
    int x = 0;
    pair<int,int>ans;
    for(auto v:idk)
    {
        int st = k[{v.first.first,v.first.second}].first;
        int en = k[{v.first.first,v.first.second}].second;
        int z = lol[en+1] - lol[st];
        if((en-st+1)%2)
        {
            if(ar[(en+st)/2] == ((en+st)/2)+1)z--;
        }
        if(v.second-z> x)
        {
            x = v.second;
            ans = {st,en};
        }
    }
    cout<<ar[ans.first]<<" "<<ar[ans.second]<<endl;
}

Compilation message (stderr)

doktor.cpp:9:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    9 | main()
      | ^~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 0 / 10