# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
764944 | 2023-06-24T06:50:14 Z | vjudge1 | Network (BOI15_net) | C++14 | 1 ms | 212 KB |
#include <bits/stdc++.h> #define pb push_back using namespace std; int main() { int n; cin>>n; bool t[n][n]; memset(t, 0, sizeof t); for(int i = 0; i<n-1; i++){ int x, y; cin>>x>>y; t[x-1][y-1]=1; t[y-1][x-1]=1; } vector<int>one; for(int i = 0; i<n; i++){ int cnt=0; for(int j = 0; j<n; j++){ if(t[i][j]==1) cnt++; if(cnt>=2){ j=n-1; continue; } } if(cnt<2) one.pb(i+1); } int s = one.size()/2+one.size()%2; cout<<s<<'\n'; for(int i = 0; i<one.size()/2; i++){ cout<<one[i*2]<<' '<<one[i*2+1]<<'\n'; } if(s%2!=0) cout<<one[one.size()-1]<<' '<<one[0]; }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 1 ms | 212 KB | Extra information in the output file |
2 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 1 ms | 212 KB | Extra information in the output file |
2 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 1 ms | 212 KB | Extra information in the output file |
2 | Halted | 0 ms | 0 KB | - |