#include <bits/stdc++.h>
using namespace std;
const int MX = 1e6 + 10;
int N, Q;
string s, t;
struct segtree{
int st[MX << 1];
void upd(int p, int v){
for(p += MX, st[p] = v, p >>= 1; p > 0; p >>= 1) st[p] = st[p << 1] + st[p << 1|1];
}
int que(int l, int r){
int res = 0;
for(l += MX, r += MX + 1; l < r; l >>= 1, r >>= 1){
if(l & 1) res += st[l++];
if(r & 1) res += st[--r];
}
return res;
}
} S;
int main(){
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> N >> Q >> s >> t;
for(int i = N - 1; i >= 0; i--){
int x = ((int) t[i] - (int) s[i] + 26) % 26;
if((N - 1 - i) & 1) S.upd(i, -x);
else S.upd(i, x);
}
if(S.que(0, N - 1) % 26 == 0) cout << "da\n";
else cout << "ne\n";
for(int i = 0; i < Q; i++){
int p; char c; cin >> p >> c; p--;
int x = ((int) t[p] - (int) c + 26) % 26;
if((N - p - 1) & 1) S.upd(p, -x);
else S.upd(p, x);
s[p] = c;
if(S.que(0, N - 1) % 26 == 0) cout << "da\n";
else cout << "ne\n";
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
0 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
0 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
340 KB |
Output is correct |
24 |
Correct |
0 ms |
340 KB |
Output is correct |
25 |
Correct |
0 ms |
340 KB |
Output is correct |
26 |
Correct |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
0 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
0 ms |
340 KB |
Output is correct |
30 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
0 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
340 KB |
Output is correct |
24 |
Correct |
0 ms |
340 KB |
Output is correct |
25 |
Correct |
0 ms |
340 KB |
Output is correct |
26 |
Correct |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
0 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
0 ms |
340 KB |
Output is correct |
30 |
Correct |
1 ms |
340 KB |
Output is correct |
31 |
Correct |
43 ms |
10140 KB |
Output is correct |
32 |
Correct |
48 ms |
10180 KB |
Output is correct |
33 |
Correct |
39 ms |
10108 KB |
Output is correct |
34 |
Correct |
39 ms |
10200 KB |
Output is correct |
35 |
Correct |
39 ms |
10164 KB |
Output is correct |
36 |
Correct |
39 ms |
10488 KB |
Output is correct |
37 |
Correct |
40 ms |
10600 KB |
Output is correct |
38 |
Correct |
39 ms |
10228 KB |
Output is correct |
39 |
Correct |
39 ms |
10560 KB |
Output is correct |
40 |
Correct |
43 ms |
10572 KB |
Output is correct |
41 |
Correct |
40 ms |
10148 KB |
Output is correct |
42 |
Correct |
39 ms |
10128 KB |
Output is correct |
43 |
Correct |
40 ms |
10504 KB |
Output is correct |
44 |
Correct |
39 ms |
10132 KB |
Output is correct |
45 |
Correct |
40 ms |
10128 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
0 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
12 ms |
664 KB |
Output is correct |
17 |
Correct |
12 ms |
980 KB |
Output is correct |
18 |
Correct |
14 ms |
1024 KB |
Output is correct |
19 |
Correct |
13 ms |
980 KB |
Output is correct |
20 |
Correct |
12 ms |
980 KB |
Output is correct |
21 |
Correct |
12 ms |
1064 KB |
Output is correct |
22 |
Correct |
12 ms |
980 KB |
Output is correct |
23 |
Correct |
12 ms |
1036 KB |
Output is correct |
24 |
Correct |
12 ms |
984 KB |
Output is correct |
25 |
Correct |
12 ms |
1024 KB |
Output is correct |
26 |
Correct |
12 ms |
980 KB |
Output is correct |
27 |
Correct |
12 ms |
980 KB |
Output is correct |
28 |
Correct |
12 ms |
976 KB |
Output is correct |
29 |
Correct |
12 ms |
1056 KB |
Output is correct |
30 |
Correct |
12 ms |
1044 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
0 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
340 KB |
Output is correct |
24 |
Correct |
0 ms |
340 KB |
Output is correct |
25 |
Correct |
0 ms |
340 KB |
Output is correct |
26 |
Correct |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
0 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
0 ms |
340 KB |
Output is correct |
30 |
Correct |
1 ms |
340 KB |
Output is correct |
31 |
Correct |
12 ms |
664 KB |
Output is correct |
32 |
Correct |
12 ms |
980 KB |
Output is correct |
33 |
Correct |
14 ms |
1024 KB |
Output is correct |
34 |
Correct |
13 ms |
980 KB |
Output is correct |
35 |
Correct |
12 ms |
980 KB |
Output is correct |
36 |
Correct |
12 ms |
1064 KB |
Output is correct |
37 |
Correct |
12 ms |
980 KB |
Output is correct |
38 |
Correct |
12 ms |
1036 KB |
Output is correct |
39 |
Correct |
12 ms |
984 KB |
Output is correct |
40 |
Correct |
12 ms |
1024 KB |
Output is correct |
41 |
Correct |
12 ms |
980 KB |
Output is correct |
42 |
Correct |
12 ms |
980 KB |
Output is correct |
43 |
Correct |
12 ms |
976 KB |
Output is correct |
44 |
Correct |
12 ms |
1056 KB |
Output is correct |
45 |
Correct |
12 ms |
1044 KB |
Output is correct |
46 |
Correct |
16 ms |
1236 KB |
Output is correct |
47 |
Correct |
14 ms |
1236 KB |
Output is correct |
48 |
Correct |
15 ms |
1184 KB |
Output is correct |
49 |
Correct |
15 ms |
1208 KB |
Output is correct |
50 |
Correct |
14 ms |
1220 KB |
Output is correct |
51 |
Correct |
14 ms |
1180 KB |
Output is correct |
52 |
Correct |
14 ms |
1236 KB |
Output is correct |
53 |
Correct |
19 ms |
1236 KB |
Output is correct |
54 |
Correct |
15 ms |
1272 KB |
Output is correct |
55 |
Correct |
15 ms |
1236 KB |
Output is correct |
56 |
Correct |
14 ms |
1184 KB |
Output is correct |
57 |
Correct |
14 ms |
1236 KB |
Output is correct |
58 |
Correct |
14 ms |
1228 KB |
Output is correct |
59 |
Correct |
14 ms |
1236 KB |
Output is correct |
60 |
Correct |
14 ms |
1236 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
0 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
340 KB |
Output is correct |
24 |
Correct |
0 ms |
340 KB |
Output is correct |
25 |
Correct |
0 ms |
340 KB |
Output is correct |
26 |
Correct |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
0 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
0 ms |
340 KB |
Output is correct |
30 |
Correct |
1 ms |
340 KB |
Output is correct |
31 |
Correct |
43 ms |
10140 KB |
Output is correct |
32 |
Correct |
48 ms |
10180 KB |
Output is correct |
33 |
Correct |
39 ms |
10108 KB |
Output is correct |
34 |
Correct |
39 ms |
10200 KB |
Output is correct |
35 |
Correct |
39 ms |
10164 KB |
Output is correct |
36 |
Correct |
39 ms |
10488 KB |
Output is correct |
37 |
Correct |
40 ms |
10600 KB |
Output is correct |
38 |
Correct |
39 ms |
10228 KB |
Output is correct |
39 |
Correct |
39 ms |
10560 KB |
Output is correct |
40 |
Correct |
43 ms |
10572 KB |
Output is correct |
41 |
Correct |
40 ms |
10148 KB |
Output is correct |
42 |
Correct |
39 ms |
10128 KB |
Output is correct |
43 |
Correct |
40 ms |
10504 KB |
Output is correct |
44 |
Correct |
39 ms |
10132 KB |
Output is correct |
45 |
Correct |
40 ms |
10128 KB |
Output is correct |
46 |
Correct |
12 ms |
664 KB |
Output is correct |
47 |
Correct |
12 ms |
980 KB |
Output is correct |
48 |
Correct |
14 ms |
1024 KB |
Output is correct |
49 |
Correct |
13 ms |
980 KB |
Output is correct |
50 |
Correct |
12 ms |
980 KB |
Output is correct |
51 |
Correct |
12 ms |
1064 KB |
Output is correct |
52 |
Correct |
12 ms |
980 KB |
Output is correct |
53 |
Correct |
12 ms |
1036 KB |
Output is correct |
54 |
Correct |
12 ms |
984 KB |
Output is correct |
55 |
Correct |
12 ms |
1024 KB |
Output is correct |
56 |
Correct |
12 ms |
980 KB |
Output is correct |
57 |
Correct |
12 ms |
980 KB |
Output is correct |
58 |
Correct |
12 ms |
976 KB |
Output is correct |
59 |
Correct |
12 ms |
1056 KB |
Output is correct |
60 |
Correct |
12 ms |
1044 KB |
Output is correct |
61 |
Correct |
16 ms |
1236 KB |
Output is correct |
62 |
Correct |
14 ms |
1236 KB |
Output is correct |
63 |
Correct |
15 ms |
1184 KB |
Output is correct |
64 |
Correct |
15 ms |
1208 KB |
Output is correct |
65 |
Correct |
14 ms |
1220 KB |
Output is correct |
66 |
Correct |
14 ms |
1180 KB |
Output is correct |
67 |
Correct |
14 ms |
1236 KB |
Output is correct |
68 |
Correct |
19 ms |
1236 KB |
Output is correct |
69 |
Correct |
15 ms |
1272 KB |
Output is correct |
70 |
Correct |
15 ms |
1236 KB |
Output is correct |
71 |
Correct |
14 ms |
1184 KB |
Output is correct |
72 |
Correct |
14 ms |
1236 KB |
Output is correct |
73 |
Correct |
14 ms |
1228 KB |
Output is correct |
74 |
Correct |
14 ms |
1236 KB |
Output is correct |
75 |
Correct |
14 ms |
1236 KB |
Output is correct |
76 |
Correct |
262 ms |
23892 KB |
Output is correct |
77 |
Correct |
280 ms |
24180 KB |
Output is correct |
78 |
Correct |
267 ms |
23864 KB |
Output is correct |
79 |
Correct |
269 ms |
23956 KB |
Output is correct |
80 |
Correct |
276 ms |
24108 KB |
Output is correct |
81 |
Correct |
254 ms |
23876 KB |
Output is correct |
82 |
Correct |
284 ms |
23864 KB |
Output is correct |
83 |
Correct |
271 ms |
23792 KB |
Output is correct |
84 |
Correct |
275 ms |
23832 KB |
Output is correct |
85 |
Correct |
258 ms |
23880 KB |
Output is correct |
86 |
Correct |
249 ms |
24164 KB |
Output is correct |
87 |
Correct |
244 ms |
24232 KB |
Output is correct |
88 |
Correct |
285 ms |
24292 KB |
Output is correct |
89 |
Correct |
264 ms |
23892 KB |
Output is correct |
90 |
Correct |
269 ms |
24192 KB |
Output is correct |