#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ss second
#define pb push_back
int fun(int n){
if(n<=0)return n;
string s= to_string(n);
int N=s.size();
int dp[20][10][10][2];
for(int i=0;i<20;i++){
for(int j=0;j<10;j++){
for(int p=0;p<10;p++){
for(int z=0;z<2;z++)dp[i][j][p][z]=0;
}
}
}
for(int i=1;i<10;i++){
for(int j=0;j<10;j++){
if(i>s[0]-'0')break;
if(i==j)continue;
if(i==s[0]-'0' and j==s[1]-'0'){
dp[1][i][j][1]+=1;
break;
}
dp[1][i][j][0]++;
}
}
for(int i=2;i<N;i++){
for(int j=0;j<10;j++){
for(int p=0;p<10;p++){
for(int k=0;k<10;k++){
for(int z=0;z<2;z++){
if(z==1 and k> s[i]-'0')continue;
if(k!=p and j!=k)dp[i][p][k][z and (s[i]-'0'==k)]+=dp[i-1][j][p][z];
}
}
}
}
}
int ans=0;
for(int i=0;i<10;i++){
for(int j=0;j<10;j++){
for(int z=0;z<2;z++){
ans+=dp[N-1][i][j][z];
}
}
}
return ans;
}
signed main(){
int a,b;
cin>>a>>b;
cout<<fun(b)-fun(a-1);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
2 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
5 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
6 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
7 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
8 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
436 KB |
Output is correct |
13 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
14 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
15 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
344 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
1 ms |
344 KB |
Output is correct |
20 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
8 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
9 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
10 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
13 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
14 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
15 |
Incorrect |
1 ms |
348 KB |
Output isn't 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 |
432 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
440 KB |
Output is correct |
26 |
Correct |
0 ms |
348 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 |
1 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
416 KB |
Output is correct |
32 |
Correct |
1 ms |
344 KB |
Output is correct |
33 |
Correct |
1 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
436 KB |
Output is correct |
35 |
Correct |
1 ms |
348 KB |
Output is correct |
36 |
Correct |
1 ms |
348 KB |
Output is correct |
37 |
Correct |
0 ms |
348 KB |
Output is correct |
38 |
Correct |
1 ms |
348 KB |
Output is correct |
39 |
Correct |
0 ms |
348 KB |
Output is correct |
40 |
Correct |
1 ms |
604 KB |
Output is correct |
41 |
Correct |
0 ms |
348 KB |
Output is correct |
42 |
Correct |
1 ms |
348 KB |
Output is correct |
43 |
Correct |
1 ms |
348 KB |
Output is correct |
44 |
Correct |
1 ms |
348 KB |
Output is correct |
45 |
Correct |
1 ms |
344 KB |
Output is correct |