This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define fr first
#define sc second
#define clr(a) memset(a, 0, sizeof(a))
#define sz(x) x.size()
#define printarray(arr) for (auto it = arr.begin(); it != arr.end(); ++it) cout<<*it<<" "; cout<<endl;
#define rep(n) for (ll i = 0; i < n; i++)
#define repc(i, n) for (ll i = 0; i < n; i++)
#define FOR(i, x, y) for (int i = x; i < y; i++)
#define DEC(i, x, y) for (int i = x; i >= y; i--)
#define all(v) v.begin(), v.end()
#define min3(a, b, c) min(a, min(b, c))
#define max3(a, b, c) max(a, max(b, c))
#define alla(a, n) a, a + n
#define gcd(a, b) __gcd(a, b)
#define lcm(a, b) (a * b)/gcd(a, b)
#define ull unsigned long long
using namespace std;
const int MOD = 1e9 + 7;
const int MAXN = 1e4 + 5;
vector<int> adj[MAXN];
bool vis[MAXN];
int timer = 0;
int tin[MAXN], low[MAXN];
void dfs(int u, int p){
vis[u] = true;
timer++;
tin[u] = low[u] = timer;
for(int v: adj[u]){
if(v == p) continue;
if(vis[v]){
low[u] = min(low[u], tin[v]);
} else {
dfs(v, u);
low[u] = min(low[u], low[v]);
if (low[v] > tin[u]) {
cout<<u<<' '<<v<<endl;
}
}
}
}
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, m;
cin>>n>>m;
for(int i= 0;i<m;i++){
int t1, t2;
cin>>t1>>t2;
adj[t1].pb(t2);
adj[t2].pb(t1);
}
timer = 0;
memset(low, -1, sizeof(low));
memset(tin, -1, sizeof(tin));
clr(vis);
for(int i= 1;i<=n;i++){
if(!vis[i]){
dfs(i, -1);
}
}
return 0;
}
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |