#include <bits/stdc++.h>
#include "chameleon.h"
#define MAXN 1007
using namespace std;
namespace {
int n,bad[MAXN],st,lt,rt,mid,li[MAXN],tim;
vector<int> to[MAXN],v[MAXN];
vector< pair<int,int> > sol;
vector<int> l,r,w,perm;
void dfs(int x,int side){
li[x]=tim;
if(side==0)l.push_back(x);
else r.push_back(x);
for(int i=0;i<v[x].size();i++){
if(li[v[x][i]]==tim)continue;
dfs(v[x][i],1-side);
}
}
} // namespace
void Solve(int N) {
n=N;
for(int i=1;i<=2*n;i++){
for(int f=0;f<3;f++){
st=lt=rt; rt=l.size()+1;
while(lt+1<rt){
mid=(lt+rt)/2;
w.clear();
for(int i=st;i<mid;i++)w.push_back(l[i]);
w.push_back(i);
if(Query(w)!=w.size()){
rt=mid;
}else{
lt=mid;
}
}
if(rt!=l.size()+1){
v[i].push_back(l[rt-1]);
v[l[rt-1]].push_back(i);
}
}
for(int f=0;f<3;f++){
st=lt=rt; rt=r.size()+1;
while(lt+1<rt){
mid=(lt+rt)/2;
w.clear();
for(int i=st;i<mid;i++)w.push_back(r[i]);
w.push_back(i);
if(Query(w)!=w.size()){
rt=mid;
}else{
lt=mid;
}
}
if(rt!=r.size()+1){
v[i].push_back(r[rt-1]);
v[r[rt-1]].push_back(i);
}
}
l.clear(); r.clear(); tim++;
for(int f=1;f<=2*n;f++){
if(li[f]!=tim)dfs(f,0);
}
}
for(int i=1;i<=2*n;i++){
to[i]=v[i];
}
for(int i=1;i<=2*n;i++){
if(to[i].empty())continue;
if(to[i].size()==1)continue;
else{
if(Query({i,to[i][0],to[i][1]})==1)bad[i]=to[i][2];
else if(Query({i,to[i][0],to[i][2]})==1)bad[i]=to[i][1];
else if(Query({i,to[i][2],to[i][1]})==1)bad[i]=to[i][0];
}
}
for(int i=1;i<=2*n;i++){
for(int f:to[i]){
if(bad[i]==f or bad[f]==i)continue;
if(i<f)Answer(i,f);
}
}
}
/*
4
1 0 1 0 0 1 1 0
4 4 1 2 1 2 3 3
4 3 8 7 6 5 2 1
*/
Compilation message
chameleon.cpp: In function 'void {anonymous}::dfs(int, int)':
chameleon.cpp:21:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
21 | for(int i=0;i<v[x].size();i++){
| ~^~~~~~~~~~~~
chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:44:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
44 | if(Query(w)!=w.size()){
| ~~~~~~~~^~~~~~~~~~
chameleon.cpp:51:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
51 | if(rt!=l.size()+1){
| ~~^~~~~~~~~~~~
chameleon.cpp:66:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
66 | if(Query(w)!=w.size()){
| ~~~~~~~~^~~~~~~~~~
chameleon.cpp:73:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
73 | if(rt!=r.size()+1){
| ~~^~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Wrong Answer [2] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Wrong Answer [2] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Wrong Answer [2] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Wrong Answer [2] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Wrong Answer [2] |
| 2 |
Halted |
0 ms |
0 KB |
- |
