#include <bits/stdc++.h>
using namespace std;
const int mod = 1e9 + 7;
const int N = 505;
int n, m, cnt[26];
char a[N][N];
int main(){
ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin >> n >> m;
for (int i = 1; i <= n; i++) for (int j = 1; j <= n; j++) cin >> a[i][j];
for (int i = 1; i <= n; i++) {
for (int j = i + 1; j <= n; j++) {
memset(cnt, 0, sizeof(cnt));
int f = -1, last = -1;
for (int k = 1; k <= n; k++) {
cnt[a[i][k] - 'a']++;
cnt[a[j][k] - 'a']--;
if (a[i][k] != a[j][k]) {
if (f == -1) f = k;
last = k;
}
}
if (last - f + 1 <= m && count(cnt, cnt + 26, 0) == 26) return cout << "DA", 0;
}
}
cout << "NE";
return 0;
}
/*
10 4
bkppucotbt
pctkuobbtp
tpktuobcbp
cpubotnptb
btpcupobnt
tbctponbpu
ktcpbpuotb
ctubpnpbot
bcnotutppb
ttcbppuobk
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
420 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
348 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
3 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
380 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
380 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
18 ms |
376 KB |
Output is correct |
2 |
Correct |
16 ms |
504 KB |
Output is correct |
3 |
Correct |
17 ms |
504 KB |
Output is correct |
4 |
Correct |
11 ms |
516 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
27 ms |
504 KB |
Output is correct |
2 |
Correct |
16 ms |
376 KB |
Output is correct |
3 |
Correct |
14 ms |
376 KB |
Output is correct |
4 |
Correct |
13 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
19 ms |
504 KB |
Output is correct |
2 |
Correct |
13 ms |
480 KB |
Output is correct |
3 |
Correct |
13 ms |
376 KB |
Output is correct |
4 |
Correct |
11 ms |
380 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
18 ms |
504 KB |
Output is correct |
2 |
Correct |
4 ms |
376 KB |
Output is correct |
3 |
Correct |
14 ms |
504 KB |
Output is correct |
4 |
Correct |
15 ms |
504 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
271 ms |
628 KB |
Output is correct |
2 |
Correct |
179 ms |
632 KB |
Output is correct |
3 |
Correct |
151 ms |
632 KB |
Output is correct |
4 |
Correct |
136 ms |
632 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
246 ms |
504 KB |
Output is correct |
2 |
Correct |
89 ms |
504 KB |
Output is correct |
3 |
Correct |
191 ms |
624 KB |
Output is correct |
4 |
Correct |
238 ms |
632 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
246 ms |
624 KB |
Output is correct |
2 |
Correct |
46 ms |
628 KB |
Output is correct |
3 |
Correct |
200 ms |
640 KB |
Output is correct |
4 |
Correct |
133 ms |
636 KB |
Output is correct |