#include<bits/stdc++.h>
using namespace std;
#define int long long
int solve(int n){
if(n<10) return n+1;
if(n<100) return n+1 - n/11;
int rt = 81;
string s = to_string(n);
rt *= pow(8, max(0LL, (int)s.size()-3));
rt += (s[0]-'0'-1) * 9 * pow(8, s.size()-2);
for(int i = 1; i < s.size(); i++){
int niii=10;
int ni = s[i]-'0';
int nii = s[i-1]-'0';
if(i>=2) niii = s[i-2]-'0';
rt += max(ni -(nii<ni) -(niii<ni), 0LL) * pow(8, max(0LL, (int)s.size()-i-1));
if((i>=1 && s[i]==s[i-1]) || (i>=2 && s[i]==s[i-2])) break;
if(i==s.size()-1) rt++;
}
return rt;
}
int32_t main(){
int a, b; cin >> a >> b;
cout << solve(b) - solve(a-1) << '\n';
}
Compilation message
numbers.cpp: In function 'long long int solve(long long int)':
numbers.cpp:15:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
15 | for(int i = 1; i < s.size(); i++){
| ~~^~~~~~~~~~
numbers.cpp:23:7: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
23 | if(i==s.size()-1) rt++;
| ~^~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 2 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 5 |
Correct |
1 ms |
296 KB |
Output is correct |
| 6 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 7 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
296 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Incorrect |
1 ms |
296 KB |
Output isn't correct |
| 15 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
296 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 9 |
Incorrect |
1 ms |
300 KB |
Output isn't correct |
| 10 |
Incorrect |
1 ms |
296 KB |
Output isn't correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 13 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 14 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 15 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
1 ms |
304 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
212 KB |
Output is correct |
| 27 |
Correct |
1 ms |
212 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
1 ms |
212 KB |
Output is correct |
| 30 |
Correct |
1 ms |
300 KB |
Output is correct |
| 31 |
Correct |
1 ms |
212 KB |
Output is correct |
| 32 |
Correct |
0 ms |
212 KB |
Output is correct |
| 33 |
Correct |
1 ms |
212 KB |
Output is correct |
| 34 |
Correct |
1 ms |
212 KB |
Output is correct |
| 35 |
Correct |
1 ms |
212 KB |
Output is correct |
| 36 |
Correct |
1 ms |
212 KB |
Output is correct |
| 37 |
Correct |
1 ms |
300 KB |
Output is correct |
| 38 |
Correct |
1 ms |
212 KB |
Output is correct |
| 39 |
Correct |
0 ms |
212 KB |
Output is correct |
| 40 |
Correct |
1 ms |
212 KB |
Output is correct |
| 41 |
Correct |
1 ms |
212 KB |
Output is correct |
| 42 |
Correct |
0 ms |
212 KB |
Output is correct |
| 43 |
Correct |
1 ms |
212 KB |
Output is correct |
| 44 |
Correct |
1 ms |
300 KB |
Output is correct |
| 45 |
Correct |
1 ms |
296 KB |
Output is correct |
