#include "simurgh.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 501;
int vis[N] , vi = 0 , n;
vector< pair<int,int> > g[N], T[N];
vector< int > r , tree , anss;
bool ok[N * N];
bool asked[N * N];
int ask(){
return count_common_roads(r);
}
void DFS(int node){
vis[node] = vi;
for(int i=0;i<g[node].size();i++){
if(vis[g[node][i].first] != vi){
tree.push_back(g[node][i].second);
T[node].push_back(g[node][i]);
T[g[node][i].first].push_back(make_pair(node,g[node][i].second));
DFS(g[node][i].first);
}
}
}
bool DFS2(int node,int target){
if(node == target) return true;
vis[node] = vi;
for(int i=0;i<T[node].size();i++){
int newnode = T[node][i].first;
if(vis[newnode] != vi && DFS2(newnode,target)) return true;
}
return false;
}
std::vector<int> find_roads(int N, std::vector<int> u, std::vector<int> v) {
for(int i=0;i<u.size();i++){
g[u[i]].push_back(make_pair(v[i],i));
g[v[i]].push_back(make_pair(u[i],i));
}
vi++;
DFS(0);
sort(tree.begin(),tree.end());
r = tree;
int res = ask();
n = N;
for(int i=0;i<n;i++){
bool found = false;
for(int j=0;j<g[i].size();j++){
if(asked[g[i][j].second]) continue;
//asked[g[i][j].second] = true;
int newnode = g[i][j].first;
int edge = 0;
for(int k=0;k<T[i].size();k++){
vi++;
if(DFS2(T[i][k].first,newnode)){
edge = T[i][k].second;
break;
}
}
r.clear();
for(int i=0;i<tree.size();i++){
if(tree[i] == edge) continue;
r.push_back(tree[i]);
}
r.push_back(g[i][j].second);
sort(r.begin(),r.end());
int cur = ask();
if(cur > res){
ok[g[i][j].second] = true;
found = true;
}
else if(res > cur){
ok[edge] = true;
found = true;
}
}
if(!found){
for(int j=0;j<g[i].size();j++){
ok[g[i][j].second] = true;
}
}
}
for(int i=0;i<u.size();i++) if(ok[i]) anss.push_back(i);
return anss;
}
Compilation message
simurgh.cpp: In function 'void DFS(int)':
simurgh.cpp:16:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<g[node].size();i++){
^
simurgh.cpp: In function 'bool DFS2(int, int)':
simurgh.cpp:29:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<T[node].size();i++){
^
simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:37:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<u.size();i++){
^
simurgh.cpp:49:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<g[i].size();j++){
^
simurgh.cpp:54:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int k=0;k<T[i].size();k++){
^
simurgh.cpp:62:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<tree.size();i++){
^
simurgh.cpp:79:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<g[i].size();j++){
^
simurgh.cpp:84:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<u.size();i++) if(ok[i]) anss.push_back(i);
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
2544 KB |
WA in grader: NO |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
2544 KB |
WA in grader: NO |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
2544 KB |
WA in grader: NO |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
2544 KB |
correct |
| 2 |
Incorrect |
0 ms |
2544 KB |
WA in grader: NO |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
2544 KB |
WA in grader: NO |
| 2 |
Halted |
0 ms |
0 KB |
- |
