#include <bits/stdc++.h>
#include "chameleon.h"
#pragma GCC optimize("Ofast")
#define fs first
#define sc second
#define cd complex<double>
#define p_q priority_queue
using namespace std;
/*
int Query(const std::vector<int> &p);
void Answer(int a, int b);
*/
mt19937 rnd(time(NULL));
void Solve(int N){
int n=2*N;
vector<vector<int> > v(n+1);
vector<int> vis(n+1);
vector<int> h(n);
iota(h.begin(),h.end(),1);
random_shuffle(h.begin(),h.end());
vector<pair<int,int> > ans;
for(int a=0;a<n;a++){
int i=h[a];
vector<int> tmp;
if(vis[i]){
continue;
}
tmp.push_back(i);
for(int b=0;b<n;b++){
int j=h[b];
if(vis[j]){
continue;
}
tmp.push_back(j);
if(Query(tmp)==1){
int z=N-1;
vector<int> p;
for(int c=0;c<n;c++){
int k=h[c];
if(k==i || k==j){
continue;
}
p.push_back(k);
}
if(Query(p)<N){
for(int c=0;c<n;c++){
int k=h[c];
if(k==i || k==j){
continue;
}
vector<int> pp=h;
vector<int> y;
random_shuffle(pp.begin(),pp.end());
for(int d=0;d<n;d++){
int l=pp[d];
if(l==i || l==j || l==k){
continue;
}
y.push_back(l);
}
z=max(z,Query(y));
if(z==N){
break;
}
}
if(z<N){
ans.push_back({i,j});
vis[i]=vis[j]=1;
break;
}
}
/*
else{
ans.push_back({i,j});
vis[i]=vis[j]=1;
break;
}
*/
}
tmp.pop_back();
}
}
for(auto h:ans){
Answer(h.fs,h.sc);
}
}
/*
using std::exit;
using std::fprintf;
using std::printf;
using std::scanf;
constexpr int Q_MAX = 20'000;
constexpr int N_MAX = 500;
int N;
int Y[N_MAX * 2 + 1], C[N_MAX * 2 + 1], L[N_MAX * 2 + 1];
int query_count = 0;
int answer_count = 0;
bool finishes[N_MAX * 2 + 1];
void WrongAnswer(int code) {
printf("Wrong Answer [%d]\n", code);
exit(0);
}
int Query(const std::vector<int> &p) {
if (++query_count > Q_MAX) WrongAnswer(3);
bool presents[N_MAX * 2 + 1];
for (int i = 1; i <= N * 2; ++i) presents[i] = false;
for (const int k : p) {
if (k <= 0 || k > N * 2) WrongAnswer(1);
if (presents[k]) WrongAnswer(2);
presents[k] = true;
}
bool colors[N_MAX + 1];
for (int j = 1; j <= N; ++j) colors[j] = false;
int color_count = 0;
for (int i = 1; i <= N * 2; ++i) {
if (!presents[i]) continue;
const int color = presents[L[i]] ? C[L[i]] : C[i];
if (!colors[color]) {
++color_count;
colors[color] = true;
}
}
return color_count;
}
void Answer(int a, int b) {
++answer_count;
cout << a << " " << b << "\n";
if (a <= 0 || a > N * 2) WrongAnswer(4);
if (b <= 0 || b > N * 2) WrongAnswer(4);
if (finishes[a]) WrongAnswer(5);
finishes[a] = true;
if (finishes[b]) WrongAnswer(5);
finishes[b] = true;
if (C[a] != C[b]) WrongAnswer(6);
}
int main() {
if (scanf("%d", &N) != 1) {
fprintf(stderr, "Error while reading input.\n");
exit(1);
}
for (int i = 1; i <= N * 2; ++i) {
if (scanf("%d", &Y[i]) != 1) {
fprintf(stderr, "Error while reading input.\n");
exit(1);
}
}
for (int i = 1; i <= N * 2; ++i) {
if (scanf("%d", &C[i]) != 1) {
fprintf(stderr, "Error while reading input.\n");
exit(1);
}
}
for (int i = 1; i <= N * 2; ++i) {
if (scanf("%d", &L[i]) != 1) {
fprintf(stderr, "Error while reading input.\n");
exit(1);
}
}
for (int i = 1; i <= N * 2; ++i) finishes[i] = false;
Solve(N);
if (answer_count != N) WrongAnswer(7);
printf("Accepted: %d\n", query_count);
return 0;
}
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
208 KB |
Wrong Answer [2] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
208 KB |
Wrong Answer [2] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
208 KB |
Wrong Answer [2] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
208 KB |
Wrong Answer [2] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
208 KB |
Wrong Answer [2] |
| 2 |
Halted |
0 ms |
0 KB |
- |
