#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e5;
int n, m;
int graph[maxn];
int dis[maxn];
bool vis[maxn];
int dfs(int nd, int e, int d){
vis[nd] = true;
if(nd == e) return d;
if(graph[nd] == -1) return -1;
if(!vis[graph[nd]]) return dfs(graph[nd], e, d+1);
else return -1;
}
int main(){
ios::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
cin >> n;
for(int i = 0; i < n; i++){
cin >> graph[i]; graph[i]--;
}
cin >> m;
while(m--){
int typ; cin >> typ;
if(typ == 1){
int x; cin >> x;
graph[x-1] = -1;
} else {
int a, b; cin >> a >> b;
if(graph[a-1] == -1) {
cout << -1 << '\n';
continue;
}
for(int i = 0; i < n; i++)
visited[i] = false;
cout << dfs(a-1, b-1, 0);
}
}
}
Compilation message
specialg.cpp: In function 'int main()':
specialg.cpp:46:5: error: 'visited' was not declared in this scope
46 | visited[i] = false;
| ^~~~~~~
