#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds
string ans[2]={"ne","da"};
int main(){
ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
int n,q;cin>>n>>q;
string s;cin>>s;
string b;cin>>b;
vector<int> arr(n);
for(int i=0;i<n;i++){
arr[i] = (b[i]-s[i]);
}
vector<int> u(n);
u[n-1]=-1;
for(int j=n-2;j>=0;j--) u[j]=u[j+1]*-1;
ll sum=0;
for(int i=0;i<n;i++) sum+=u[i]*arr[i];
cout<<ans[sum%26==0]<<"\n";
for(int i=0;i<q;i++){
int p;cin>>p;
p--;
char x;cin>>x;
ll og = u[p]*arr[p];
s[p]=x;
arr[p] = b[p]-s[p];
sum-=og;
sum+=u[p]*arr[p];
cout<<ans[sum%26==0]<<"\n";
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
352 KB |
Output is correct |
4 |
Correct |
0 ms |
352 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
352 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
356 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
352 KB |
Output is correct |
4 |
Correct |
0 ms |
352 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
352 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
356 KB |
Output is correct |
16 |
Correct |
1 ms |
356 KB |
Output is correct |
17 |
Correct |
1 ms |
356 KB |
Output is correct |
18 |
Correct |
0 ms |
356 KB |
Output is correct |
19 |
Correct |
0 ms |
352 KB |
Output is correct |
20 |
Correct |
1 ms |
356 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
600 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
352 KB |
Output is correct |
4 |
Correct |
0 ms |
352 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
352 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
356 KB |
Output is correct |
16 |
Correct |
1 ms |
356 KB |
Output is correct |
17 |
Correct |
1 ms |
356 KB |
Output is correct |
18 |
Correct |
0 ms |
356 KB |
Output is correct |
19 |
Correct |
0 ms |
352 KB |
Output is correct |
20 |
Correct |
1 ms |
356 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
600 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
10 ms |
11916 KB |
Output is correct |
32 |
Correct |
11 ms |
11932 KB |
Output is correct |
33 |
Correct |
10 ms |
11920 KB |
Output is correct |
34 |
Correct |
10 ms |
11996 KB |
Output is correct |
35 |
Correct |
10 ms |
11908 KB |
Output is correct |
36 |
Correct |
10 ms |
12520 KB |
Output is correct |
37 |
Correct |
10 ms |
12452 KB |
Output is correct |
38 |
Correct |
10 ms |
11924 KB |
Output is correct |
39 |
Correct |
10 ms |
12532 KB |
Output is correct |
40 |
Correct |
10 ms |
12524 KB |
Output is correct |
41 |
Correct |
10 ms |
12180 KB |
Output is correct |
42 |
Correct |
11 ms |
12044 KB |
Output is correct |
43 |
Correct |
10 ms |
12472 KB |
Output is correct |
44 |
Correct |
10 ms |
11948 KB |
Output is correct |
45 |
Correct |
10 ms |
11984 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
352 KB |
Output is correct |
4 |
Correct |
0 ms |
352 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
352 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
356 KB |
Output is correct |
16 |
Correct |
12 ms |
1272 KB |
Output is correct |
17 |
Correct |
9 ms |
1116 KB |
Output is correct |
18 |
Correct |
9 ms |
964 KB |
Output is correct |
19 |
Correct |
9 ms |
1116 KB |
Output is correct |
20 |
Correct |
9 ms |
1116 KB |
Output is correct |
21 |
Correct |
10 ms |
1116 KB |
Output is correct |
22 |
Correct |
9 ms |
1112 KB |
Output is correct |
23 |
Correct |
10 ms |
1116 KB |
Output is correct |
24 |
Correct |
9 ms |
1112 KB |
Output is correct |
25 |
Correct |
9 ms |
1116 KB |
Output is correct |
26 |
Correct |
9 ms |
1116 KB |
Output is correct |
27 |
Correct |
9 ms |
1112 KB |
Output is correct |
28 |
Correct |
10 ms |
1112 KB |
Output is correct |
29 |
Correct |
9 ms |
1112 KB |
Output is correct |
30 |
Correct |
9 ms |
1116 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
352 KB |
Output is correct |
4 |
Correct |
0 ms |
352 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
352 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
356 KB |
Output is correct |
16 |
Correct |
1 ms |
356 KB |
Output is correct |
17 |
Correct |
1 ms |
356 KB |
Output is correct |
18 |
Correct |
0 ms |
356 KB |
Output is correct |
19 |
Correct |
0 ms |
352 KB |
Output is correct |
20 |
Correct |
1 ms |
356 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
600 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
12 ms |
1272 KB |
Output is correct |
32 |
Correct |
9 ms |
1116 KB |
Output is correct |
33 |
Correct |
9 ms |
964 KB |
Output is correct |
34 |
Correct |
9 ms |
1116 KB |
Output is correct |
35 |
Correct |
9 ms |
1116 KB |
Output is correct |
36 |
Correct |
10 ms |
1116 KB |
Output is correct |
37 |
Correct |
9 ms |
1112 KB |
Output is correct |
38 |
Correct |
10 ms |
1116 KB |
Output is correct |
39 |
Correct |
9 ms |
1112 KB |
Output is correct |
40 |
Correct |
9 ms |
1116 KB |
Output is correct |
41 |
Correct |
9 ms |
1116 KB |
Output is correct |
42 |
Correct |
9 ms |
1112 KB |
Output is correct |
43 |
Correct |
10 ms |
1112 KB |
Output is correct |
44 |
Correct |
9 ms |
1112 KB |
Output is correct |
45 |
Correct |
9 ms |
1116 KB |
Output is correct |
46 |
Correct |
10 ms |
1244 KB |
Output is correct |
47 |
Correct |
11 ms |
1116 KB |
Output is correct |
48 |
Correct |
10 ms |
1112 KB |
Output is correct |
49 |
Correct |
10 ms |
1116 KB |
Output is correct |
50 |
Correct |
10 ms |
1240 KB |
Output is correct |
51 |
Correct |
10 ms |
1112 KB |
Output is correct |
52 |
Correct |
11 ms |
1112 KB |
Output is correct |
53 |
Correct |
10 ms |
1116 KB |
Output is correct |
54 |
Correct |
10 ms |
1116 KB |
Output is correct |
55 |
Correct |
10 ms |
1112 KB |
Output is correct |
56 |
Correct |
10 ms |
1112 KB |
Output is correct |
57 |
Correct |
10 ms |
1116 KB |
Output is correct |
58 |
Correct |
10 ms |
1116 KB |
Output is correct |
59 |
Correct |
10 ms |
1124 KB |
Output is correct |
60 |
Correct |
14 ms |
1112 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
352 KB |
Output is correct |
4 |
Correct |
0 ms |
352 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
352 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
356 KB |
Output is correct |
16 |
Correct |
1 ms |
356 KB |
Output is correct |
17 |
Correct |
1 ms |
356 KB |
Output is correct |
18 |
Correct |
0 ms |
356 KB |
Output is correct |
19 |
Correct |
0 ms |
352 KB |
Output is correct |
20 |
Correct |
1 ms |
356 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
600 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
10 ms |
11916 KB |
Output is correct |
32 |
Correct |
11 ms |
11932 KB |
Output is correct |
33 |
Correct |
10 ms |
11920 KB |
Output is correct |
34 |
Correct |
10 ms |
11996 KB |
Output is correct |
35 |
Correct |
10 ms |
11908 KB |
Output is correct |
36 |
Correct |
10 ms |
12520 KB |
Output is correct |
37 |
Correct |
10 ms |
12452 KB |
Output is correct |
38 |
Correct |
10 ms |
11924 KB |
Output is correct |
39 |
Correct |
10 ms |
12532 KB |
Output is correct |
40 |
Correct |
10 ms |
12524 KB |
Output is correct |
41 |
Correct |
10 ms |
12180 KB |
Output is correct |
42 |
Correct |
11 ms |
12044 KB |
Output is correct |
43 |
Correct |
10 ms |
12472 KB |
Output is correct |
44 |
Correct |
10 ms |
11948 KB |
Output is correct |
45 |
Correct |
10 ms |
11984 KB |
Output is correct |
46 |
Correct |
12 ms |
1272 KB |
Output is correct |
47 |
Correct |
9 ms |
1116 KB |
Output is correct |
48 |
Correct |
9 ms |
964 KB |
Output is correct |
49 |
Correct |
9 ms |
1116 KB |
Output is correct |
50 |
Correct |
9 ms |
1116 KB |
Output is correct |
51 |
Correct |
10 ms |
1116 KB |
Output is correct |
52 |
Correct |
9 ms |
1112 KB |
Output is correct |
53 |
Correct |
10 ms |
1116 KB |
Output is correct |
54 |
Correct |
9 ms |
1112 KB |
Output is correct |
55 |
Correct |
9 ms |
1116 KB |
Output is correct |
56 |
Correct |
9 ms |
1116 KB |
Output is correct |
57 |
Correct |
9 ms |
1112 KB |
Output is correct |
58 |
Correct |
10 ms |
1112 KB |
Output is correct |
59 |
Correct |
9 ms |
1112 KB |
Output is correct |
60 |
Correct |
9 ms |
1116 KB |
Output is correct |
61 |
Correct |
10 ms |
1244 KB |
Output is correct |
62 |
Correct |
11 ms |
1116 KB |
Output is correct |
63 |
Correct |
10 ms |
1112 KB |
Output is correct |
64 |
Correct |
10 ms |
1116 KB |
Output is correct |
65 |
Correct |
10 ms |
1240 KB |
Output is correct |
66 |
Correct |
10 ms |
1112 KB |
Output is correct |
67 |
Correct |
11 ms |
1112 KB |
Output is correct |
68 |
Correct |
10 ms |
1116 KB |
Output is correct |
69 |
Correct |
10 ms |
1116 KB |
Output is correct |
70 |
Correct |
10 ms |
1112 KB |
Output is correct |
71 |
Correct |
10 ms |
1112 KB |
Output is correct |
72 |
Correct |
10 ms |
1116 KB |
Output is correct |
73 |
Correct |
10 ms |
1116 KB |
Output is correct |
74 |
Correct |
10 ms |
1124 KB |
Output is correct |
75 |
Correct |
14 ms |
1112 KB |
Output is correct |
76 |
Correct |
167 ms |
21788 KB |
Output is correct |
77 |
Correct |
164 ms |
22212 KB |
Output is correct |
78 |
Correct |
195 ms |
21992 KB |
Output is correct |
79 |
Correct |
161 ms |
21636 KB |
Output is correct |
80 |
Correct |
163 ms |
21632 KB |
Output is correct |
81 |
Correct |
151 ms |
21744 KB |
Output is correct |
82 |
Correct |
194 ms |
21896 KB |
Output is correct |
83 |
Correct |
177 ms |
21792 KB |
Output is correct |
84 |
Correct |
172 ms |
21972 KB |
Output is correct |
85 |
Correct |
158 ms |
21640 KB |
Output is correct |
86 |
Correct |
157 ms |
21980 KB |
Output is correct |
87 |
Correct |
157 ms |
21988 KB |
Output is correct |
88 |
Correct |
213 ms |
21992 KB |
Output is correct |
89 |
Correct |
162 ms |
21688 KB |
Output is correct |
90 |
Correct |
167 ms |
21984 KB |
Output is correct |