#include <bits/stdc++.h>
using namespace std;
#define ll long long
ll dp[10][10][20][2];
string str;
// all : all digits are allowed
ll Calc(int first, int second, int len, bool all){
if(len>=str.length()){
return 1;
}else{
if(dp[first][second][len][all]==-1){
ll help= 0;
if(all){
for(int n=0;n<=9;n++){
if(n!=first && n!=second){
help+=Calc(second,n, len+1, true);
}
}
}else{
int limit = str[len]-'0';
for(int n=0;n<limit;n++){
if(n!=first && n!=second){
help+=Calc(second, n, len+1,true);
}
}
if(limit!=first && limit!=second){
help+=Calc(second, limit, len+1,false);
}
}
dp[first][second][len][all]=help;
}
return dp[first][second][len][all];
}
}
ll Get(ll num){
if(num<0) return 0;
stringstream ss; ss << num; str = ss.str();
memset(dp,-1,sizeof(dp));
int first = str[0]-'0';
ll res =1;
for(int n=1;n<=first;n++){
res+=Calc(n,n,1,n!=first);
}
for(int k=2;k<=str.length();k++){
for(int n=1;n<10;n++){
res+=Calc(n,n,k,true);
}
}
return res;
}
int main(){
ll a,b;
scanf("%lld %lld",&a,&b);
ll counter = Get(b)-Get(a-1);
printf("%lld\n",counter);
}
Compilation message
numbers.cpp: In function 'long long int Calc(int, int, int, bool)':
numbers.cpp:10:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
10 | if(len>=str.length()){
| ~~~^~~~~~~~~~~~~~
numbers.cpp: In function 'long long int Get(long long int)':
numbers.cpp:53:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
53 | for(int k=2;k<=str.length();k++){
| ~^~~~~~~~~~~~~~
numbers.cpp: In function 'int main()':
numbers.cpp:63:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
63 | scanf("%lld %lld",&a,&b);
| ~~~~~^~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
304 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
300 KB |
Output is correct |
| 8 |
Correct |
1 ms |
296 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
308 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
300 KB |
Output is correct |
| 16 |
Correct |
1 ms |
240 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 |
304 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
256 KB |
Output is correct |
| 5 |
Correct |
1 ms |
304 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
304 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
300 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
388 KB |
Output is correct |
| 15 |
Correct |
1 ms |
300 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
304 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 |
308 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
304 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
212 KB |
Output is correct |
| 27 |
Correct |
1 ms |
300 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
304 KB |
Output is correct |
| 30 |
Correct |
1 ms |
212 KB |
Output is correct |
| 31 |
Correct |
1 ms |
212 KB |
Output is correct |
| 32 |
Correct |
1 ms |
340 KB |
Output is correct |
| 33 |
Correct |
2 ms |
300 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 |
212 KB |
Output is correct |
| 38 |
Correct |
1 ms |
384 KB |
Output is correct |
| 39 |
Correct |
1 ms |
308 KB |
Output is correct |
| 40 |
Correct |
1 ms |
308 KB |
Output is correct |
| 41 |
Correct |
1 ms |
300 KB |
Output is correct |
| 42 |
Correct |
1 ms |
304 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 |
212 KB |
Output is correct |
