이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "chameleon.h"
#include <bits/stdc++.h>
using namespace std;
const int maxn=1005;
vector<int> edge[maxn],lst[2];
bool vis[maxn];
int res[maxn],pos[maxn];
void dfs(int u,int d){
vis[u]=true;lst[d].push_back(u);
for(int v:edge[u]){
if(!vis[v]) dfs(v,d^1);
}
}
void Solve(int N) {
for(int i=1;i<=2*N;i++){
lst[0].clear();lst[1].clear();
for(int j=1;j<i;j++) vis[j]=false;
for(int j=1;j<i;j++){
if(!vis[j]) dfs(j,0);
}
//cout << i << endl;
for(int j=0;j<2;j++){
//cout << i << ' ' << j << '\n';
while(true){
if(lst[j].empty()) break;
lst[j].push_back(i);
if(Query(lst[j])==(int)lst[j].size()) break;
else lst[j].pop_back();
int l=1,r=(int)lst[j].size();
while(r>l){
int mid=(r+l-1)>>1;
vector<int> p;
for(int k=0;k<mid;k++) p.push_back(lst[j][k]);
p.push_back(i);
if(Query(p)!=(int)p.size()) r=mid;
else l=mid+1;
}
//cout << i << ' ' << j << ' ' << r << '\n';
edge[lst[j][r-1]].push_back(i);
edge[i].push_back(lst[j][r-1]);
lst[j].erase(lst[j].begin()+r-1);
}
}
}
for(int i=1;i<=2*N;i++){
if((int)edge[i].size()==1) res[i]=edge[i][0];
else{
int a=Query({i,edge[i][0],edge[i][1]});
int b=Query({i,edge[i][0],edge[i][2]});
int c=Query({i,edge[i][1],edge[i][2]});
if(a==1) pos[i]=edge[i][2];
else if(b==1) pos[i]=edge[i][1];
else pos[i]=edge[i][0];
}
}
for(int i=1;i<=2*N;i++){
if((int)edge[i].size()==1) continue;
for(int v:edge[i]){
if(v==pos[i]) continue;
if(pos[v]!=i) res[i]=v;
}
}
for(int i=1;i<=2*N;i++){
if(i<res[i]) Answer(i,res[i]);
}
}
컴파일 시 표준 에러 (stderr) 메시지
chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:50:17: warning: unused variable 'c' [-Wunused-variable]
50 | int c=Query({i,edge[i][1],edge[i][2]});
| ^
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