#include <iostream>
#include <vector>
#include <list>
#include <algorithm>
#define vi vector<int>
#define ve vector
#define ll long long
#define vf vector<float>
#define vll vector<pair<ll,ll>>
#define ii pair<int,int>
#define vvi vector<vi>
#define vii vector<ii>
#define gii greater<ii>
#define pb push_back
#define fi first
#define se second
#define INF 1e7
#define unsigned u
#define eps 1e-18
#define eps1 1e-25
#define optimise ios_base::sync_with_stdio(false);cin.tie(NULL);
#define MAX_A 100005
#define V 450
#define re register
#define maxi(a,b) ((a) > (b) ? (a) : (b))
using namespace std;
vii adj[500005];
bool vis[500005];
int tv[500005];
int n,m,used;
int parent[500005];
void dfs(int u){
if(tv[u]){
while(tv[u]){
cout << u << " ";
tv[u] = 0;
u = parent[u];
}
cout << endl;
}
for(!adj[u].empty()){
ii x =adj[u].back();
adj[u].pop_back();
if(!vis[x.se]){
vis[x.se] = 1;
tv[u] = 1;
parent[u] = x.fi;
dfs(x.fi);
}
}
}
int main(){
optimise;
cin >> n >> m;
for (int i = 0; i < m; ++i)
{
int a,b;
cin >> a >>b;
adj[a].pb({b,i});
adj[b].pb({a,i});
}
dfs(1);
}
Compilation message
postmen.cpp: In function 'void dfs(int)':
postmen.cpp:41:24: error: expected ';' before ')' token
41 | for(!adj[u].empty()){
| ^
| ;
postmen.cpp:51:1: error: expected primary-expression before '}' token
51 | }
| ^
postmen.cpp:50:6: error: expected ';' before '}' token
50 | }
| ^
| ;
51 | }
| ~
postmen.cpp:51:1: error: expected primary-expression before '}' token
51 | }
| ^
postmen.cpp:50:6: error: expected ')' before '}' token
50 | }
| ^
| )
51 | }
| ~
postmen.cpp:41:8: note: to match this '('
41 | for(!adj[u].empty()){
| ^
postmen.cpp:51:1: error: expected primary-expression before '}' token
51 | }
| ^
