| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1103301 |
2024-10-20T16:48:21 Z |
raduv |
Mouse (info1cup19_mouse) |
C++17 |
|
1 ms |
336 KB |
#include <bits/stdc++.h>
//#define DEBUG
//#define PRINTQ
#ifndef DEBUG
#include "grader.h"
#endif // DEBUG
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
const int MAXN = 256;
ordered_set candidates[MAXN + 1];
ordered_set available, cavailable;
bool isset[MAXN + 1];
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
static inline unsigned long long genrand() {
return uniform_int_distribution<unsigned long long>(0, (unsigned long long)-1)(rng);
}
#ifdef DEBUG
int p[MAXN + 1] = {43, 49, 22, 11, 29, 50, 26, 44, 4, 38, 48, 21, 7, 13, 24, 47, 41, 6, 9, 12, 25, 42, 18, 17, 1, 39, 27, 28, 46, 36, 14, 5, 3, 20, 31, 37, 30, 45, 16, 15 ,32, 35, 8, 10, 33, 34, 2, 19, 40, 23};
int n = 50;
int nq = 0;
int st1 = 1;
std::vector<int> ans;
#endif // DEBUG
#ifdef DEBUG
int isPermutation(std::vector<int> q){
std::sort(q.begin(), q.end());
int i = 1;
for(auto x : q){
if(x != i)
return 0;
i++;
}
return 1;
}
#endif // DEBUG
#ifdef DEBUG
int query(std::vector<int> q){
#ifdef PRINTQ
for(auto x : q)
printf("%d ", x);
printf(" perm : %d", isPermutation(q));
printf("\n");
#endif // PRINTQ
nq++;
st1 = std::min(st1, (int)isPermutation(q));
int x = 0;
for( int i = 0; i < n; i++ ){
if(q[i] == p[i])
x++;
}
return x;
}
#endif // DEBUG
void solve(int n){
int i, j, x, p, p1;
for( i = 1; i <= n; i++ ){
available.insert(i);
for( j = 1; j <= n; j++ )
candidates[i].insert(j);
}
std::vector<int> q(n);
for( i = 1; i <= n; i++ ){
int mn = n + 1;
for( j = n / 2; j <= n; j++ )
if( !isset[j] && candidates[j].size() < mn ){
mn = candidates[j].size();
p = j;
}
int mn1 = n + 1;
for( j = 1; j < n / 2; j++ )
if( !isset[j] && candidates[j].size() < mn1 ){
mn1 = candidates[j].size();
p1 = j;
}
if(mn1 > mn)
p = p1;
isset[p] = 1;
while(candidates[p].size() > 1){
q[p - 1] = *candidates[p].find_by_order(genrand() % candidates[p].size());
cavailable = available;
available.erase(q[p - 1]);
for( j = 1; j <= n; j++ ){
if(!isset[j]){
q[j - 1] = *available.find_by_order(genrand() % available.size());
available.erase(q[j - 1]);
}
}
available = cavailable;
#ifdef PRINTQ
printf("%d available : ", p);
for( auto x : available )
printf("%d ", x);
printf("\n");
#endif // DEBUG
if( (x = query(q)) == i - 1 ){
for( j = 1; j <= n; j++ ){
if( (!isset[j] || j == p) && candidates[j].find(q[j - 1]) != candidates[j].end())
candidates[j].erase(q[j - 1]);
}
}
else if(x == n)
return;
}
q[p - 1] = *candidates[p].begin();
for( j = 1; j <= n; j++ )
if(!isset[j] && candidates[j].find(q[p - 1]) != candidates[j].end())
candidates[j].erase(q[p - 1]);
available.erase(*candidates[p].begin());
}
query(q);
}
#ifdef DEBUG
int main(){
solve(n);
int i = 0;
int st = 1;
for( auto x : ans ){
if(x != p[i])
st = 0;
i++;
}
printf("Correct Permutations : %d\n", st1);
printf("Good Last Permutation : %d\n", st);
printf("Number Of Queries : %d\n", nq);
return 0;
}
#endif // DEBUG
Compilation message
mouse.cpp: In function 'void solve(int)':
mouse.cpp:74:45: warning: comparison of integer expressions of different signedness: '__gnu_pbds::detail::bin_search_tree_set<int, __gnu_pbds::null_type, std::less<int>, __gnu_pbds::detail::tree_traits<int, __gnu_pbds::null_type, std::less<int>, __gnu_pbds::tree_order_statistics_node_update, __gnu_pbds::rb_tree_tag, std::allocator<char> >, std::allocator<char> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
74 | if( !isset[j] && candidates[j].size() < mn ){
| ~~~~~~~~~~~~~~~~~~~~~^~~~
mouse.cpp:80:45: warning: comparison of integer expressions of different signedness: '__gnu_pbds::detail::bin_search_tree_set<int, __gnu_pbds::null_type, std::less<int>, __gnu_pbds::detail::tree_traits<int, __gnu_pbds::null_type, std::less<int>, __gnu_pbds::tree_order_statistics_node_update, __gnu_pbds::rb_tree_tag, std::allocator<char> >, std::allocator<char> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
80 | if( !isset[j] && candidates[j].size() < mn1 ){
| ~~~~~~~~~~~~~~~~~~~~~^~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
336 KB |
Is not a permutation |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
336 KB |
Is not a permutation |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
336 KB |
Is not a permutation |
| 2 |
Halted |
0 ms |
0 KB |
- |
