#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
string limit;
int dpTab[2][20][12][12];
int dp(bool L,int pos=0,int last1=10,int last2=10){
if(pos==limit.size())return 1;
if(dpTab[L][pos][last1][last2]!=-1)
return dpTab[L][pos][last1][last2];
int cnt=0;
int borne = (limit[pos]-'0');
if(!L)borne=9;
for(int digit=0;digit<=borne;digit++){
if(digit!=last1 && digit!=last2){
int L2 = (borne==digit);
if(L==false)L2=false;
cnt+=dp(L2,pos+1,digit,last1);
}
}
dpTab[L][pos][last1][last2] = cnt;
return dpTab[L][pos][last1][last2];
}
void setDp(ll lim){
limit = to_string(lim);
for(int b=0;b<2;b++){
for(int pos=0;pos<20;pos++){
for(int last1=0;last1<=10;last1++){
for(int last2=0;last2<=10;last2++){
dpTab[b][pos][last1][last2]=-1;
}
}
}
}
}
signed main(){
ll a,b;
cin>>a>>b;
int cnt=0;
setDp(b);
cnt+=dp(true,0,10,10);
setDp(a-1);
cnt-=dp(true,0,10,10);
cout<<cnt<<endl;
return 0;
}
Compilation message
numbers.cpp: In function 'int dp(bool, int, int, int)':
numbers.cpp:8:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
8 | if(pos==limit.size())return 1;
| ~~~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 2 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 3 |
Correct |
1 ms |
348 KB |
Output is correct |
| 4 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 5 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 6 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 7 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
600 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
600 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 15 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 16 |
Correct |
0 ms |
344 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
0 ms |
344 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 4 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 5 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 9 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 10 |
Incorrect |
0 ms |
348 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 |
0 ms |
348 KB |
Output isn't correct |
| 14 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 15 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
344 KB |
Output is correct |
| 20 |
Correct |
1 ms |
504 KB |
Output is correct |
| 21 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 22 |
Correct |
1 ms |
348 KB |
Output is correct |
| 23 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 26 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 27 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 28 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 29 |
Correct |
1 ms |
348 KB |
Output is correct |
| 30 |
Correct |
0 ms |
348 KB |
Output is correct |
| 31 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 32 |
Correct |
1 ms |
348 KB |
Output is correct |
| 33 |
Incorrect |
1 ms |
600 KB |
Output isn't correct |
| 34 |
Correct |
1 ms |
348 KB |
Output is correct |
| 35 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 36 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 37 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 38 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 39 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 40 |
Correct |
0 ms |
348 KB |
Output is correct |
| 41 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 42 |
Correct |
0 ms |
344 KB |
Output is correct |
| 43 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 44 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 45 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
