#include <bits/stdc++.h>
#define sz(z) ( (int)z.size() )
#define in cin
#define out cout
using namespace std;
const int mod = 1000000007;
int n,sol = 0;
bool discard(vector<int> &v) {
bool eliminated = false;
for (int i = 0; i + 1 < sz(v); i++) {
for (int j = i + 1; j < sz(v); j++) {
if (v[i] == v[j]) {
swap(v[i] , v[sz(v) - 1]);
v.pop_back();
swap(v[j] , v[sz(v) - 1]);
v.pop_back();
eliminated = true;
}
}
}
return eliminated;
}
void back(int round, vector<int> v[3], bool eliminated) {
int mround = round % 3;
if (mround == 0 && eliminated == 0) {
sol++;
return;
} else if (sol == 0) eliminated = 0;
int l = mround, r = (mround + 1) % 3;
if (sz(v[l]) == 0) {
back(round + 1 , v , eliminated);
} else {
for (int i = 0; i < sz(v[l]); i++) {
vector<int> newv[3] = {v[0] , v[1] , v[2]};
int x = newv[l][i];
swap(newv[l][i] , newv[l][sz(newv[l]) - 1]);
newv[l].pop_back();
newv[r].push_back(x);
eliminated = discard(newv[r]);
back(round + 1, newv, eliminated);
}
}
// cout << "\n";
}
int main() {
int t;
in >> n >> t;
while (t--) {
vector<int> v[3];
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 2 * n; j++) {
int x;
in >> x;
v[i].push_back(x);
}
}
sol = 0;
for (int i = 0; i < 3; i++) discard(v[i]);
back(0 , v , 1);
// cout << "\n";
out << sol % mod << "\n";
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
2 |
Incorrect |
75 ms |
288 KB |
Output isn't correct |
3 |
Execution timed out |
2073 ms |
204 KB |
Time limit exceeded |
4 |
Execution timed out |
2083 ms |
204 KB |
Time limit exceeded |
5 |
Execution timed out |
2075 ms |
332 KB |
Time limit exceeded |
6 |
Execution timed out |
2081 ms |
328 KB |
Time limit exceeded |
7 |
Execution timed out |
2081 ms |
404 KB |
Time limit exceeded |
8 |
Execution timed out |
2096 ms |
456 KB |
Time limit exceeded |
9 |
Execution timed out |
2073 ms |
460 KB |
Time limit exceeded |
10 |
Execution timed out |
2092 ms |
564 KB |
Time limit exceeded |