#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MAXL = 25;
const int MAXD = 12;
ll dp[MAXL][MAXD][MAXD][2][2];
vector<int> digitos;
int N;
ll A,B;
ll solve(int pos,int l1,int l2,int flag,int leading){
ll &ret = dp[pos][l1][l2][flag][leading];
if(ret != -1) return ret;
ret = 0;
if(pos == N){
ret = 1;
return ret;
}
int limite = 9;
if(flag) limite = digitos[pos];
for(int i = 0;i<=limite;i++){
if(leading == 1 && i == 0){
ret += solve(pos+1,l1,l2,flag && (i == limite),leading);
}
else{
if(l1 != i && l2 != i) ret += solve(pos+1,i,l1,flag && (i == limite), 0);
}
}
return ret;
}
ll calcula(ll X){
if(X == -1) return 0;
if(X == 0) return 1;
digitos.clear();
memset(dp,-1,sizeof(dp));
while(X != 0){
digitos.push_back(X % 10);
X /= 10;
}
reverse(digitos.begin(),digitos.end());
N = digitos.size();
return solve(0,10,10,1,1);
}
int main(){
cin >> A >> B;
cout << calcula(B) - calcula(A-1) << endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
500 KB |
Output is correct |
| 3 |
Correct |
2 ms |
500 KB |
Output is correct |
| 4 |
Correct |
2 ms |
500 KB |
Output is correct |
| 5 |
Correct |
2 ms |
500 KB |
Output is correct |
| 6 |
Correct |
2 ms |
664 KB |
Output is correct |
| 7 |
Correct |
2 ms |
664 KB |
Output is correct |
| 8 |
Correct |
2 ms |
664 KB |
Output is correct |
| 9 |
Correct |
2 ms |
664 KB |
Output is correct |
| 10 |
Correct |
2 ms |
664 KB |
Output is correct |
| 11 |
Correct |
2 ms |
664 KB |
Output is correct |
| 12 |
Correct |
2 ms |
664 KB |
Output is correct |
| 13 |
Correct |
2 ms |
664 KB |
Output is correct |
| 14 |
Correct |
2 ms |
664 KB |
Output is correct |
| 15 |
Correct |
2 ms |
664 KB |
Output is correct |
| 16 |
Correct |
2 ms |
664 KB |
Output is correct |
| 17 |
Correct |
2 ms |
664 KB |
Output is correct |
| 18 |
Correct |
2 ms |
664 KB |
Output is correct |
| 19 |
Correct |
2 ms |
664 KB |
Output is correct |
| 20 |
Correct |
2 ms |
664 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
724 KB |
Output is correct |
| 2 |
Correct |
2 ms |
724 KB |
Output is correct |
| 3 |
Correct |
2 ms |
724 KB |
Output is correct |
| 4 |
Correct |
2 ms |
724 KB |
Output is correct |
| 5 |
Correct |
2 ms |
724 KB |
Output is correct |
| 6 |
Correct |
2 ms |
724 KB |
Output is correct |
| 7 |
Correct |
2 ms |
724 KB |
Output is correct |
| 8 |
Correct |
3 ms |
724 KB |
Output is correct |
| 9 |
Correct |
2 ms |
724 KB |
Output is correct |
| 10 |
Correct |
2 ms |
724 KB |
Output is correct |
| 11 |
Correct |
2 ms |
724 KB |
Output is correct |
| 12 |
Correct |
2 ms |
724 KB |
Output is correct |
| 13 |
Correct |
2 ms |
724 KB |
Output is correct |
| 14 |
Correct |
2 ms |
724 KB |
Output is correct |
| 15 |
Correct |
2 ms |
724 KB |
Output is correct |
| 16 |
Correct |
2 ms |
724 KB |
Output is correct |
| 17 |
Correct |
3 ms |
724 KB |
Output is correct |
| 18 |
Correct |
2 ms |
724 KB |
Output is correct |
| 19 |
Correct |
2 ms |
724 KB |
Output is correct |
| 20 |
Correct |
2 ms |
724 KB |
Output is correct |
| 21 |
Correct |
2 ms |
724 KB |
Output is correct |
| 22 |
Correct |
2 ms |
724 KB |
Output is correct |
| 23 |
Correct |
2 ms |
724 KB |
Output is correct |
| 24 |
Correct |
2 ms |
724 KB |
Output is correct |
| 25 |
Correct |
2 ms |
724 KB |
Output is correct |
| 26 |
Correct |
2 ms |
724 KB |
Output is correct |
| 27 |
Correct |
2 ms |
724 KB |
Output is correct |
| 28 |
Correct |
2 ms |
724 KB |
Output is correct |
| 29 |
Correct |
2 ms |
724 KB |
Output is correct |
| 30 |
Correct |
2 ms |
724 KB |
Output is correct |
| 31 |
Correct |
2 ms |
724 KB |
Output is correct |
| 32 |
Correct |
2 ms |
724 KB |
Output is correct |
| 33 |
Correct |
2 ms |
724 KB |
Output is correct |
| 34 |
Correct |
2 ms |
724 KB |
Output is correct |
| 35 |
Correct |
2 ms |
724 KB |
Output is correct |
| 36 |
Correct |
2 ms |
724 KB |
Output is correct |
| 37 |
Correct |
2 ms |
724 KB |
Output is correct |
| 38 |
Correct |
2 ms |
724 KB |
Output is correct |
| 39 |
Correct |
2 ms |
724 KB |
Output is correct |
| 40 |
Correct |
2 ms |
724 KB |
Output is correct |
| 41 |
Correct |
2 ms |
724 KB |
Output is correct |
| 42 |
Correct |
2 ms |
724 KB |
Output is correct |
| 43 |
Correct |
2 ms |
724 KB |
Output is correct |
| 44 |
Correct |
2 ms |
724 KB |
Output is correct |
| 45 |
Correct |
2 ms |
724 KB |
Output is correct |
