#include <bits/stdc++.h>
using namespace std;
int N, A[500001], B[500001];
int main() {
ios_base::sync_with_stdio(0), cin.tie(0);
cin >> N;
for (int i = 1; i <= N * 2; ++i) cin >> A[i];
for (int i = 1; i <= N * 2; ++i) cin >> B[i];
int p = -1;
string ans;
for (int i = 1; i <= N * 2; ++i) {
int a = A[i], b = B[i];
if (a > b) swap(a, b);
if (p > b) return !printf("-1");
if (p <= a) p = a;
else p = b;
if (p == A[i]) ans.push_back('A');
else ans.push_back('B');
}
cout << ans;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
512 KB |
Output is correct |
3 |
Incorrect |
4 ms |
384 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
512 KB |
Output is correct |
3 |
Incorrect |
4 ms |
384 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |