#include<bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define pb push_back
#define sz(x) (int)(x.size())
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
#define vi vector<int>
#define vp vector<pii>
#define vvi vector<vi>
const int mxn=43000;
#ifdef local
void setio(){freopen("/Users/iantsai/Library/Mobile Documents/com~apple~CloudDocs/cpp/Empty.md","r",stdin);}
set<int>cur;
int color[mxn];
int cnt[mxn];
int n;
bool ok;
int tt=0;
void init(){
cin>>n;
for(int i=1;i<=2*n;i++){
cin>>color[i];
}
}
int res;
int Query(int x){
tt++;
if(cur.find(x)!=cur.end()){
cur.erase(x);
cnt[color[x]]--;
if(cnt[color[x]]==0)res--;
}
else{
cur.insert(x);
cnt[color[x]]++;
if(cnt[color[x]]==1)res++;
}
return res;
}
void Answer(int a,int b){
if(a>b)swap(a,b);
cout<<a<<' '<<b<<'\n';
if(color[a]!=color[b]){
ok=0;
}
}
#else
void setio(){}
#include "minerals.h"
#endif
//////////////////
vector<int>cur2;
void dac(vector<int>cur,int l,int r){
if(l>r)return;
if(l==r){
Answer(cur[0],cur2[l]);
return;
}
int mm=l+r>>1;
int dick;
for(int i=l;i<=mm;i++){
dick=Query(cur2[i]);
}
vector<int>L,R;
for(auto i:cur){
int x=Query(i);
if(x==dick){
L.pb(i);
}
else{
R.pb(i);
}
Query(i);
}
for(int i=l;i<=mm;i++){
Query(cur2[i]);
}
if(sz(L))dac(L,l,mm);
if(sz(R))dac(R,mm+1,r);
}
void Solve(int n){
vector<int>temp;
int prev=0;
for(int i=1;i<=2*n;i++){
if(Query(i)==prev+1){
prev++;
temp.pb(i);
}
else{
cur2.pb(i);
}
}
for(int i=1;i<=2*n;i++){
Query(i);
}
dac(temp,0,n-1);
}
/////////////////
#ifdef local
int main(){
ok=1;
tt=0;
setio();
init();
Solve(n);
cout<<tt<<'\n';
if(ok)cout<<"Accepted!\n";
else cout<<"Wrong Answer\n";
}
#else
#endif
/*
input:
*/
Compilation message
minerals.cpp: In function 'void dac(std::vector<int>, int, int)':
minerals.cpp:64:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
64 | int mm=l+r>>1;
| ~^~
minerals.cpp:72:9: warning: 'dick' may be used uninitialized in this function [-Wmaybe-uninitialized]
72 | if(x==dick){
| ^~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
360 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
2 ms |
600 KB |
Output is correct |
4 |
Correct |
4 ms |
856 KB |
Output is correct |
5 |
Correct |
8 ms |
1200 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
360 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
2 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
344 KB |
Output is correct |
7 |
Correct |
2 ms |
600 KB |
Output is correct |
8 |
Correct |
4 ms |
856 KB |
Output is correct |
9 |
Correct |
8 ms |
1200 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
6 ms |
856 KB |
Output is correct |
12 |
Correct |
9 ms |
1284 KB |
Output is correct |
13 |
Correct |
7 ms |
1268 KB |
Output is correct |
14 |
Correct |
7 ms |
1112 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
360 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
2 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
344 KB |
Output is correct |
7 |
Correct |
2 ms |
600 KB |
Output is correct |
8 |
Correct |
4 ms |
856 KB |
Output is correct |
9 |
Correct |
8 ms |
1200 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
6 ms |
856 KB |
Output is correct |
12 |
Correct |
9 ms |
1284 KB |
Output is correct |
13 |
Correct |
7 ms |
1268 KB |
Output is correct |
14 |
Correct |
7 ms |
1112 KB |
Output is correct |
15 |
Incorrect |
15 ms |
2272 KB |
Wrong Answer [2] |
16 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
360 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
2 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
344 KB |
Output is correct |
7 |
Correct |
2 ms |
600 KB |
Output is correct |
8 |
Correct |
4 ms |
856 KB |
Output is correct |
9 |
Correct |
8 ms |
1200 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
6 ms |
856 KB |
Output is correct |
12 |
Correct |
9 ms |
1284 KB |
Output is correct |
13 |
Correct |
7 ms |
1268 KB |
Output is correct |
14 |
Correct |
7 ms |
1112 KB |
Output is correct |
15 |
Incorrect |
15 ms |
2272 KB |
Wrong Answer [2] |
16 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
360 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
2 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
344 KB |
Output is correct |
7 |
Correct |
2 ms |
600 KB |
Output is correct |
8 |
Correct |
4 ms |
856 KB |
Output is correct |
9 |
Correct |
8 ms |
1200 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
6 ms |
856 KB |
Output is correct |
12 |
Correct |
9 ms |
1284 KB |
Output is correct |
13 |
Correct |
7 ms |
1268 KB |
Output is correct |
14 |
Correct |
7 ms |
1112 KB |
Output is correct |
15 |
Incorrect |
15 ms |
2272 KB |
Wrong Answer [2] |
16 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
360 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
2 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
344 KB |
Output is correct |
7 |
Correct |
2 ms |
600 KB |
Output is correct |
8 |
Correct |
4 ms |
856 KB |
Output is correct |
9 |
Correct |
8 ms |
1200 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
6 ms |
856 KB |
Output is correct |
12 |
Correct |
9 ms |
1284 KB |
Output is correct |
13 |
Correct |
7 ms |
1268 KB |
Output is correct |
14 |
Correct |
7 ms |
1112 KB |
Output is correct |
15 |
Incorrect |
15 ms |
2272 KB |
Wrong Answer [2] |
16 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
360 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
2 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
344 KB |
Output is correct |
7 |
Correct |
2 ms |
600 KB |
Output is correct |
8 |
Correct |
4 ms |
856 KB |
Output is correct |
9 |
Correct |
8 ms |
1200 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
6 ms |
856 KB |
Output is correct |
12 |
Correct |
9 ms |
1284 KB |
Output is correct |
13 |
Correct |
7 ms |
1268 KB |
Output is correct |
14 |
Correct |
7 ms |
1112 KB |
Output is correct |
15 |
Incorrect |
15 ms |
2272 KB |
Wrong Answer [2] |
16 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
360 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
2 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
344 KB |
Output is correct |
7 |
Correct |
2 ms |
600 KB |
Output is correct |
8 |
Correct |
4 ms |
856 KB |
Output is correct |
9 |
Correct |
8 ms |
1200 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
6 ms |
856 KB |
Output is correct |
12 |
Correct |
9 ms |
1284 KB |
Output is correct |
13 |
Correct |
7 ms |
1268 KB |
Output is correct |
14 |
Correct |
7 ms |
1112 KB |
Output is correct |
15 |
Incorrect |
15 ms |
2272 KB |
Wrong Answer [2] |
16 |
Halted |
0 ms |
0 KB |
- |