#include <bits/stdc++.h>
using namespace std;
typedef long long lint;
typedef pair<int, int> pi;
int n, a[105];
char str[105][105];
int adj[26][26], deg[26], topo[26];
int main(){
cin >> n;
for(int i=0; i<n; i++) cin >> str[i];
for(int i=0; i<n; i++){
cin >> a[i];
a[i]--;
}
for(int i=0; i+1<n; i++){
int j = 0;
while(1){
if(str[a[i]][j] != str[a[i+1]][j]){
break;
}
j++;
}
if(str[a[i]][j] == 0){
continue;
}
else if(str[a[i+1]][j] == 0){
puts("NE");
return 0;
}
else{
adj[str[a[i]][j] - 'a'][str[a[i+1]][j] - 'a'] = 1;
}
}
for(int i=0; i<26; i++){
for(int j=0; j<26; j++){
if(adj[i][j]) deg[j]++;
}
}
queue<int> que;
for(int i=0; i<26; i++){
if(!deg[i]) que.push(i);
}
int piv = 0;
while(!que.empty()){
int x = que.front();
que.pop();
topo[x] = piv++;
for(int i=0; i<26; i++){
if(adj[x][i]){
deg[i]--;
if(deg[i] == 0) que.push(i);
}
}
}
if(piv != 26){
puts("NE");
return 0;
}
puts("DA");
for(int i=0; i<26; i++) printf("%c", topo[i] + 'a');
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
380 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
380 KB |
Output is correct |
2 |
Correct |
2 ms |
424 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
424 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
3 ms |
568 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
568 KB |
Output is correct |
2 |
Correct |
2 ms |
568 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
568 KB |
Output is correct |
2 |
Correct |
2 ms |
568 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
568 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
568 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
568 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |