제출 #1009177

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1009177		ivopav	Special graph (IZhO13_specialg)	C++17	0 / 100	1063 ms	2256 KiB

specialg

#include <bits/stdc++.h>
using namespace std;

#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin >> n;
    vector<int> slje={};
    for (int i=0;i<n;i++){
        int unos;
        cin >> unos;
        slje.push_back(unos-1);
    }
    int q;
    cin >> q;
    vector<int> zad(n,-1);
    for (int i=0;i<q;i++){
        int typ;
        cin >> typ;
        if (typ==1){
            int unos;
            cin >> unos;
            slje[--unos]=-1;
        }
        else {
            int unos;
            int unos2;
            cin >> unos >> unos2;
            int rje=0;
            --unos;
            --unos2;
            while (unos!=unos2){
                if (zad[unos]==i || slje[unos]==-1){
                    rje=-1;
                    break;
                }
                zad[unos]=i;
                rje++;
                unos=slje[unos];
            }
            cout << rje << " \n";
        }
    }
}

• Subtask 1: 0 / 100