#include "islands.h"
#include <bits/stdc++.h>
using namespace std;
vector<vector<array<int, 2>>> g;
vector<map<int, int>> connected;
vector<int> color, par, nett;
int x, y;
bool dfs(int u, int p){
par[u] = p;
color[u] = 1;
if(nett[u]){
return true;
}
for(auto [v, e]:g[u]){
if(v==p)
continue;
if(color[v]){
x = v;
y = u;
return true;
}
if(dfs(v, u)){
return true;
}
}
return false;
}
std::variant<bool, std::vector<int>> find_journey(int N, int M, std::vector<int> U, std::vector<int> V) {
g.assign(N, {});
connected.assign(N, {});
color.assign(N, {});
par.assign(N, {});
nett.assign(N, {});
for(int i=0; i<M; i++){
if(not connected[U[i]][V[i]]){
g[U[i]].push_back({V[i], i});
}
connected[U[i]][V[i]]++;
if(connected[U[i]][V[i]]>=2 and connected[V[i]][U[i]]>=1){
nett[U[i]]=1;
}
if(connected[U[i]][V[i]]>=1 and connected[V[i]][U[i]]>=2){
nett[V[i]]=1;
}
}
return dfs(0, -1);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
0 ms |
344 KB |
Output is partially correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Partially correct |
1 ms |
348 KB |
Output is partially correct |
4 |
Partially correct |
0 ms |
348 KB |
Output is partially correct |
5 |
Partially correct |
0 ms |
348 KB |
Output is partially correct |
6 |
Partially correct |
96 ms |
13044 KB |
Output is partially correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
2 ms |
860 KB |
Output is partially correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Partially correct |
0 ms |
348 KB |
Output is partially correct |
5 |
Correct |
1 ms |
604 KB |
Output is correct |
6 |
Partially correct |
1 ms |
348 KB |
Output is partially correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
1 ms |
348 KB |
Output is partially correct |
2 |
Partially correct |
2 ms |
604 KB |
Output is partially correct |
3 |
Partially correct |
62 ms |
4688 KB |
Output is partially correct |
4 |
Partially correct |
92 ms |
11624 KB |
Output is partially correct |
5 |
Partially correct |
2 ms |
604 KB |
Output is partially correct |
6 |
Partially correct |
2 ms |
604 KB |
Output is partially correct |
7 |
Partially correct |
1 ms |
348 KB |
Output is partially correct |
8 |
Partially correct |
0 ms |
348 KB |
Output is partially correct |
9 |
Partially correct |
0 ms |
348 KB |
Output is partially correct |
10 |
Partially correct |
1 ms |
600 KB |
Output is partially correct |
11 |
Incorrect |
2 ms |
604 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |