#include <bits/stdc++.h>
#include <climits>
#include <ext/pb_ds/assoc_container.hpp>
#include <utility>
using namespace __gnu_pbds;
using namespace std;
int char_diff(char a,char b){
int index_a=int(a)-int('a');
int index_b=int(b)-int('a');
int diff=(index_b-index_a+26)%26;
return diff;
}
void solve() {
int n,q;
cin>>n>>q;
string s;
cin>>s;
string t;
cin>>t;
int sign[n];
int value[n];
sign[n-1]=1;
for(int i=n-2;i>=0;i--){
sign[i]=-1*sign[i+1];
}
int c=0;
for(int i=0;i<n;i++){
value[i]=char_diff(s[i],t[i]);
c+=value[i]*sign[i];
}
c=c%26;
if(c==0)
cout<<"da"<<endl;
else
cout<<"ne"<<endl;
while(q--){
int pos;
char ch;
cin>>pos>>ch;
pos--;
s[pos]=ch;
c-=value[pos]*sign[pos];
value[pos]=char_diff(s[pos],t[pos]);
c+=value[pos]*sign[pos];
c=c%26;
if(c==0)
cout<<"da"<<endl;
else
cout<<"ne"<<endl;
}
}
int main() {
//file();
solve();
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
344 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
344 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
35 ms |
10308 KB |
Output is correct |
32 |
Correct |
34 ms |
10308 KB |
Output is correct |
33 |
Correct |
34 ms |
10244 KB |
Output is correct |
34 |
Correct |
35 ms |
10180 KB |
Output is correct |
35 |
Correct |
32 ms |
10572 KB |
Output is correct |
36 |
Correct |
33 ms |
10304 KB |
Output is correct |
37 |
Correct |
32 ms |
10304 KB |
Output is correct |
38 |
Correct |
39 ms |
10308 KB |
Output is correct |
39 |
Correct |
32 ms |
10320 KB |
Output is correct |
40 |
Correct |
35 ms |
10320 KB |
Output is correct |
41 |
Correct |
33 ms |
10320 KB |
Output is correct |
42 |
Correct |
33 ms |
10320 KB |
Output is correct |
43 |
Correct |
33 ms |
10200 KB |
Output is correct |
44 |
Correct |
35 ms |
10300 KB |
Output is correct |
45 |
Correct |
31 ms |
10312 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
116 ms |
528 KB |
Output is correct |
17 |
Correct |
138 ms |
512 KB |
Output is correct |
18 |
Correct |
114 ms |
592 KB |
Output is correct |
19 |
Correct |
128 ms |
508 KB |
Output is correct |
20 |
Correct |
114 ms |
628 KB |
Output is correct |
21 |
Correct |
116 ms |
504 KB |
Output is correct |
22 |
Correct |
139 ms |
596 KB |
Output is correct |
23 |
Correct |
120 ms |
480 KB |
Output is correct |
24 |
Correct |
115 ms |
548 KB |
Output is correct |
25 |
Correct |
115 ms |
516 KB |
Output is correct |
26 |
Correct |
115 ms |
628 KB |
Output is correct |
27 |
Correct |
116 ms |
516 KB |
Output is correct |
28 |
Correct |
116 ms |
620 KB |
Output is correct |
29 |
Correct |
115 ms |
596 KB |
Output is correct |
30 |
Correct |
116 ms |
596 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
344 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
116 ms |
528 KB |
Output is correct |
32 |
Correct |
138 ms |
512 KB |
Output is correct |
33 |
Correct |
114 ms |
592 KB |
Output is correct |
34 |
Correct |
128 ms |
508 KB |
Output is correct |
35 |
Correct |
114 ms |
628 KB |
Output is correct |
36 |
Correct |
116 ms |
504 KB |
Output is correct |
37 |
Correct |
139 ms |
596 KB |
Output is correct |
38 |
Correct |
120 ms |
480 KB |
Output is correct |
39 |
Correct |
115 ms |
548 KB |
Output is correct |
40 |
Correct |
115 ms |
516 KB |
Output is correct |
41 |
Correct |
115 ms |
628 KB |
Output is correct |
42 |
Correct |
116 ms |
516 KB |
Output is correct |
43 |
Correct |
116 ms |
620 KB |
Output is correct |
44 |
Correct |
115 ms |
596 KB |
Output is correct |
45 |
Correct |
116 ms |
596 KB |
Output is correct |
46 |
Correct |
118 ms |
596 KB |
Output is correct |
47 |
Correct |
169 ms |
512 KB |
Output is correct |
48 |
Correct |
134 ms |
596 KB |
Output is correct |
49 |
Correct |
140 ms |
592 KB |
Output is correct |
50 |
Correct |
119 ms |
600 KB |
Output is correct |
51 |
Correct |
119 ms |
484 KB |
Output is correct |
52 |
Correct |
119 ms |
592 KB |
Output is correct |
53 |
Correct |
118 ms |
576 KB |
Output is correct |
54 |
Correct |
120 ms |
592 KB |
Output is correct |
55 |
Correct |
119 ms |
596 KB |
Output is correct |
56 |
Correct |
119 ms |
592 KB |
Output is correct |
57 |
Correct |
145 ms |
592 KB |
Output is correct |
58 |
Correct |
119 ms |
592 KB |
Output is correct |
59 |
Correct |
119 ms |
512 KB |
Output is correct |
60 |
Correct |
120 ms |
476 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
344 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
35 ms |
10308 KB |
Output is correct |
32 |
Correct |
34 ms |
10308 KB |
Output is correct |
33 |
Correct |
34 ms |
10244 KB |
Output is correct |
34 |
Correct |
35 ms |
10180 KB |
Output is correct |
35 |
Correct |
32 ms |
10572 KB |
Output is correct |
36 |
Correct |
33 ms |
10304 KB |
Output is correct |
37 |
Correct |
32 ms |
10304 KB |
Output is correct |
38 |
Correct |
39 ms |
10308 KB |
Output is correct |
39 |
Correct |
32 ms |
10320 KB |
Output is correct |
40 |
Correct |
35 ms |
10320 KB |
Output is correct |
41 |
Correct |
33 ms |
10320 KB |
Output is correct |
42 |
Correct |
33 ms |
10320 KB |
Output is correct |
43 |
Correct |
33 ms |
10200 KB |
Output is correct |
44 |
Correct |
35 ms |
10300 KB |
Output is correct |
45 |
Correct |
31 ms |
10312 KB |
Output is correct |
46 |
Correct |
116 ms |
528 KB |
Output is correct |
47 |
Correct |
138 ms |
512 KB |
Output is correct |
48 |
Correct |
114 ms |
592 KB |
Output is correct |
49 |
Correct |
128 ms |
508 KB |
Output is correct |
50 |
Correct |
114 ms |
628 KB |
Output is correct |
51 |
Correct |
116 ms |
504 KB |
Output is correct |
52 |
Correct |
139 ms |
596 KB |
Output is correct |
53 |
Correct |
120 ms |
480 KB |
Output is correct |
54 |
Correct |
115 ms |
548 KB |
Output is correct |
55 |
Correct |
115 ms |
516 KB |
Output is correct |
56 |
Correct |
115 ms |
628 KB |
Output is correct |
57 |
Correct |
116 ms |
516 KB |
Output is correct |
58 |
Correct |
116 ms |
620 KB |
Output is correct |
59 |
Correct |
115 ms |
596 KB |
Output is correct |
60 |
Correct |
116 ms |
596 KB |
Output is correct |
61 |
Correct |
118 ms |
596 KB |
Output is correct |
62 |
Correct |
169 ms |
512 KB |
Output is correct |
63 |
Correct |
134 ms |
596 KB |
Output is correct |
64 |
Correct |
140 ms |
592 KB |
Output is correct |
65 |
Correct |
119 ms |
600 KB |
Output is correct |
66 |
Correct |
119 ms |
484 KB |
Output is correct |
67 |
Correct |
119 ms |
592 KB |
Output is correct |
68 |
Correct |
118 ms |
576 KB |
Output is correct |
69 |
Correct |
120 ms |
592 KB |
Output is correct |
70 |
Correct |
119 ms |
596 KB |
Output is correct |
71 |
Correct |
119 ms |
592 KB |
Output is correct |
72 |
Correct |
145 ms |
592 KB |
Output is correct |
73 |
Correct |
119 ms |
592 KB |
Output is correct |
74 |
Correct |
119 ms |
512 KB |
Output is correct |
75 |
Correct |
120 ms |
476 KB |
Output is correct |
76 |
Execution timed out |
1048 ms |
12624 KB |
Time limit exceeded |
77 |
Halted |
0 ms |
0 KB |
- |