#pragma GCC optimize("O3")
//#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,sse4.1,sse4.2,popcnt,abm,mmx,avx,avx2,fma")
#include <bits/stdc++.h>
using namespace std;
//#include <atcoder/all>
//using namespace atcoder;
//#include <bits/extc++.h>
//using namespace __gnu_pbds;
#define fi first
#define se second
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
using ll=long long;
using ull=unsigned long long;
using db=long double;
using pii=pair<int,int>;
using pll=pair<ll,ll>;
using pdb=pair<db,db>;
using tii=tuple<int,int,int>;
using tdb=tuple<db,db,db>;
using tll=tuple<ll,ll,ll>;
using ti4=tuple<int,int,int,int>;
using tl4=tuple<ll,ll,ll,ll>;
using td4=tuple<db,db,db,db>;
//using oset=tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//uniform_int_distribution<> gen(1,100);
template <int MOD_> struct modnum{
private:
int v;
public:
static const int MOD = MOD_;
modnum() : v(0) {}
modnum(ll v_) : v(int(v_ % MOD)) { if (v < 0) v += MOD; }
explicit operator int () const { return v; }
friend bool operator == (const modnum& a, const modnum& b) { return a.v == b.v; }
friend bool operator != (const modnum& a, const modnum& b) { return a.v != b.v; }
friend bool operator < (const modnum& a, const modnum& b) { return a.v < b.v; }
friend bool operator <= (const modnum& a, const modnum& b) { return a.v <= b.v; }
friend bool operator > (const modnum& a, const modnum& b) { return a.v > b.v; }
friend bool operator >= (const modnum& a, const modnum& b) { return a.v >= b.v; }
modnum& operator += (const modnum& o) {
v += o.v;
if (v >= MOD) v -= MOD;
return *this;
}
modnum& operator -= (const modnum& o) {
v -= o.v;
if (v < 0) v += MOD;
return *this;
}
modnum& operator *= (const modnum& o) {
v = int(ll(v) * ll(o.v) % MOD);
return *this;
}
friend modnum pow(modnum a, ll p) {
modnum ans = 1;
for (; p; p /= 2, a *= a) if (p&1) ans *= a;
return ans;
}
modnum operator ~ () const {
modnum res;
res.v = pow((modnum)v, MOD - 2).v;
return res;
}
modnum& operator /= (const modnum& o) {
return *this *= (~o);
}
modnum operator-() const { return modnum(-v); }
modnum& operator++() { return *this += 1; }
modnum operator++(int){ modnum tmp=*this; ++*this; return tmp; }
modnum& operator--() { return *this -= 1; }
modnum operator--(int){ modnum tmp=*this; --*this; return tmp; }
friend modnum operator + (const modnum& a, const modnum& b) { return modnum(a) += b; }
friend modnum operator - (const modnum& a, const modnum& b) { return modnum(a) -= b; }
friend modnum operator * (const modnum& a, const modnum& b) { return modnum(a) *= b; }
friend modnum operator / (const modnum& a, const modnum& b) { return modnum(a) /= b; }
friend ostream& operator<<(std::ostream& os, const modnum& o)
{
os << o.v;
return os;
}
friend istream& operator>>(std::istream& is, modnum& o)
{
is >> o.v;
return is;
}
};
const ll mod=998244353,inf=1e18;
const int N=1e6+5,M=20;
using mi=modnum<mod>;
int n,q,a[N],b[N];
string s,t;
int S[2][2];
int main(){
ios::sync_with_stdio(false); cin.tie(0);
cin>>n>>q>>s>>t;
s=" "+s;
t=" "+t;
for(int i=1;i<=n;i++){
a[i]=s[i]-'a';
b[i]=t[i]-'a';
}
for(int i=0;i<=n;i++){
S[0][i%2]=(S[0][i%2]+(a[i+1]-a[i])+52)%26;
S[1][i%2]=(S[1][i%2]+(b[i+1]-b[i])+52)%26;
}
if(S[0][0]==S[1][0]&&S[0][1]==S[1][1]) cout<<"da\n";
else cout<<"ne\n";
for(int p,t=1;t<=q;t++){
char c;
cin>>p>>c;
S[0][(p-1)%2]=(S[0][(p-1)%2]-(a[p]-a[p-1])+52)%26;
S[0][p%2]=(S[0][p%2]-(a[p+1]-a[p])+52)%26;
a[p]=c-'a';
S[0][(p-1)%2]=(S[0][(p-1)%2]+(a[p]-a[p-1])+52)%26;
S[0][p%2]=(S[0][p%2]+(a[p+1]-a[p])+52)%26;
if(S[0][0]==S[1][0]&&S[0][1]==S[1][1]) cout<<"da\n";
else cout<<"ne\n";
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 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 |
212 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 |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 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 |
212 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 |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
340 KB |
Output is correct |
24 |
Correct |
10 ms |
296 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 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 |
212 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 |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
340 KB |
Output is correct |
24 |
Correct |
10 ms |
296 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
0 ms |
340 KB |
Output is correct |
31 |
Correct |
11 ms |
10092 KB |
Output is correct |
32 |
Correct |
11 ms |
10104 KB |
Output is correct |
33 |
Correct |
13 ms |
10112 KB |
Output is correct |
34 |
Correct |
11 ms |
10148 KB |
Output is correct |
35 |
Correct |
10 ms |
10128 KB |
Output is correct |
36 |
Correct |
10 ms |
10060 KB |
Output is correct |
37 |
Correct |
11 ms |
10060 KB |
Output is correct |
38 |
Correct |
11 ms |
10036 KB |
Output is correct |
39 |
Correct |
11 ms |
10008 KB |
Output is correct |
40 |
Correct |
12 ms |
10052 KB |
Output is correct |
41 |
Correct |
12 ms |
10112 KB |
Output is correct |
42 |
Correct |
13 ms |
10052 KB |
Output is correct |
43 |
Correct |
11 ms |
10064 KB |
Output is correct |
44 |
Correct |
11 ms |
10120 KB |
Output is correct |
45 |
Correct |
10 ms |
10088 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 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 |
212 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 |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
9 ms |
596 KB |
Output is correct |
17 |
Correct |
10 ms |
596 KB |
Output is correct |
18 |
Correct |
10 ms |
596 KB |
Output is correct |
19 |
Correct |
10 ms |
652 KB |
Output is correct |
20 |
Correct |
10 ms |
596 KB |
Output is correct |
21 |
Correct |
10 ms |
560 KB |
Output is correct |
22 |
Correct |
9 ms |
596 KB |
Output is correct |
23 |
Correct |
9 ms |
644 KB |
Output is correct |
24 |
Correct |
9 ms |
596 KB |
Output is correct |
25 |
Correct |
9 ms |
596 KB |
Output is correct |
26 |
Correct |
9 ms |
596 KB |
Output is correct |
27 |
Correct |
9 ms |
596 KB |
Output is correct |
28 |
Correct |
12 ms |
640 KB |
Output is correct |
29 |
Correct |
11 ms |
596 KB |
Output is correct |
30 |
Correct |
9 ms |
524 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 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 |
212 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 |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
340 KB |
Output is correct |
24 |
Correct |
10 ms |
296 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
0 ms |
340 KB |
Output is correct |
31 |
Correct |
9 ms |
596 KB |
Output is correct |
32 |
Correct |
10 ms |
596 KB |
Output is correct |
33 |
Correct |
10 ms |
596 KB |
Output is correct |
34 |
Correct |
10 ms |
652 KB |
Output is correct |
35 |
Correct |
10 ms |
596 KB |
Output is correct |
36 |
Correct |
10 ms |
560 KB |
Output is correct |
37 |
Correct |
9 ms |
596 KB |
Output is correct |
38 |
Correct |
9 ms |
644 KB |
Output is correct |
39 |
Correct |
9 ms |
596 KB |
Output is correct |
40 |
Correct |
9 ms |
596 KB |
Output is correct |
41 |
Correct |
9 ms |
596 KB |
Output is correct |
42 |
Correct |
9 ms |
596 KB |
Output is correct |
43 |
Correct |
12 ms |
640 KB |
Output is correct |
44 |
Correct |
11 ms |
596 KB |
Output is correct |
45 |
Correct |
9 ms |
524 KB |
Output is correct |
46 |
Correct |
11 ms |
596 KB |
Output is correct |
47 |
Correct |
14 ms |
724 KB |
Output is correct |
48 |
Correct |
11 ms |
596 KB |
Output is correct |
49 |
Correct |
11 ms |
648 KB |
Output is correct |
50 |
Correct |
11 ms |
612 KB |
Output is correct |
51 |
Correct |
10 ms |
540 KB |
Output is correct |
52 |
Correct |
11 ms |
596 KB |
Output is correct |
53 |
Correct |
11 ms |
596 KB |
Output is correct |
54 |
Correct |
11 ms |
548 KB |
Output is correct |
55 |
Correct |
11 ms |
616 KB |
Output is correct |
56 |
Correct |
11 ms |
660 KB |
Output is correct |
57 |
Correct |
11 ms |
628 KB |
Output is correct |
58 |
Correct |
11 ms |
596 KB |
Output is correct |
59 |
Correct |
10 ms |
560 KB |
Output is correct |
60 |
Correct |
11 ms |
604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 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 |
212 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 |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
340 KB |
Output is correct |
24 |
Correct |
10 ms |
296 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
0 ms |
340 KB |
Output is correct |
31 |
Correct |
11 ms |
10092 KB |
Output is correct |
32 |
Correct |
11 ms |
10104 KB |
Output is correct |
33 |
Correct |
13 ms |
10112 KB |
Output is correct |
34 |
Correct |
11 ms |
10148 KB |
Output is correct |
35 |
Correct |
10 ms |
10128 KB |
Output is correct |
36 |
Correct |
10 ms |
10060 KB |
Output is correct |
37 |
Correct |
11 ms |
10060 KB |
Output is correct |
38 |
Correct |
11 ms |
10036 KB |
Output is correct |
39 |
Correct |
11 ms |
10008 KB |
Output is correct |
40 |
Correct |
12 ms |
10052 KB |
Output is correct |
41 |
Correct |
12 ms |
10112 KB |
Output is correct |
42 |
Correct |
13 ms |
10052 KB |
Output is correct |
43 |
Correct |
11 ms |
10064 KB |
Output is correct |
44 |
Correct |
11 ms |
10120 KB |
Output is correct |
45 |
Correct |
10 ms |
10088 KB |
Output is correct |
46 |
Correct |
9 ms |
596 KB |
Output is correct |
47 |
Correct |
10 ms |
596 KB |
Output is correct |
48 |
Correct |
10 ms |
596 KB |
Output is correct |
49 |
Correct |
10 ms |
652 KB |
Output is correct |
50 |
Correct |
10 ms |
596 KB |
Output is correct |
51 |
Correct |
10 ms |
560 KB |
Output is correct |
52 |
Correct |
9 ms |
596 KB |
Output is correct |
53 |
Correct |
9 ms |
644 KB |
Output is correct |
54 |
Correct |
9 ms |
596 KB |
Output is correct |
55 |
Correct |
9 ms |
596 KB |
Output is correct |
56 |
Correct |
9 ms |
596 KB |
Output is correct |
57 |
Correct |
9 ms |
596 KB |
Output is correct |
58 |
Correct |
12 ms |
640 KB |
Output is correct |
59 |
Correct |
11 ms |
596 KB |
Output is correct |
60 |
Correct |
9 ms |
524 KB |
Output is correct |
61 |
Correct |
11 ms |
596 KB |
Output is correct |
62 |
Correct |
14 ms |
724 KB |
Output is correct |
63 |
Correct |
11 ms |
596 KB |
Output is correct |
64 |
Correct |
11 ms |
648 KB |
Output is correct |
65 |
Correct |
11 ms |
612 KB |
Output is correct |
66 |
Correct |
10 ms |
540 KB |
Output is correct |
67 |
Correct |
11 ms |
596 KB |
Output is correct |
68 |
Correct |
11 ms |
596 KB |
Output is correct |
69 |
Correct |
11 ms |
548 KB |
Output is correct |
70 |
Correct |
11 ms |
616 KB |
Output is correct |
71 |
Correct |
11 ms |
660 KB |
Output is correct |
72 |
Correct |
11 ms |
628 KB |
Output is correct |
73 |
Correct |
11 ms |
596 KB |
Output is correct |
74 |
Correct |
10 ms |
560 KB |
Output is correct |
75 |
Correct |
11 ms |
604 KB |
Output is correct |
76 |
Correct |
145 ms |
13100 KB |
Output is correct |
77 |
Correct |
140 ms |
13116 KB |
Output is correct |
78 |
Correct |
128 ms |
13040 KB |
Output is correct |
79 |
Correct |
136 ms |
13084 KB |
Output is correct |
80 |
Correct |
133 ms |
13016 KB |
Output is correct |
81 |
Correct |
128 ms |
13100 KB |
Output is correct |
82 |
Correct |
134 ms |
13016 KB |
Output is correct |
83 |
Correct |
129 ms |
13040 KB |
Output is correct |
84 |
Correct |
128 ms |
13008 KB |
Output is correct |
85 |
Correct |
123 ms |
13104 KB |
Output is correct |
86 |
Correct |
132 ms |
13128 KB |
Output is correct |
87 |
Correct |
135 ms |
13096 KB |
Output is correct |
88 |
Correct |
128 ms |
13012 KB |
Output is correct |
89 |
Correct |
124 ms |
13124 KB |
Output is correct |
90 |
Correct |
142 ms |
13000 KB |
Output is correct |