#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
string s;
int dpv[20][10][10][2];
ll dp(int ind, int secondlast, int last, bool isSame){
if (ind==s.size()){
return 1;
}
if (secondlast!=-1&&dpv[ind][secondlast][last][isSame]!=-1){
return dpv[ind][secondlast][last][isSame];
}
int upper = isSame ? s[ind]-'0' : 9;
ll total = 0;
for (int i = 0; i<=upper; i++){
if (i==last || i==secondlast){continue;}
total+=dp(ind+1,last,i,isSame&&i==(s[ind]-'0'));
}
if (secondlast!=-1){
dpv[ind][secondlast][last][isSame]=total;
}
return total;
}
void initdp(){
for (int i = 0; i<20; i++){
for (int j = 0; j<10; j++){
for (int k = 0; k<10; k++){
for (int l = 0; l<2; l++){
dpv[i][j][k][l]=-1;
}
}
}
}
}
int main(){
cin.tie(0);
ios_base::sync_with_stdio(0);
ll a,b;
cin>>a>>b;
a--;
s=to_string(b);
initdp();
ll tot = dp(0,-1,-1,true);
if (a>=0){
s=to_string(a);
initdp();
tot-=dp(0,-1,-1,true);
}
cout<<tot<<'\n';
}
Compilation message
numbers.cpp: In function 'll dp(int, int, int, bool)':
numbers.cpp:10:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (ind==s.size()){
~~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 2 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 5 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 6 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 7 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
384 KB |
Output is correct |
| 10 |
Correct |
0 ms |
384 KB |
Output is correct |
| 11 |
Correct |
1 ms |
384 KB |
Output is correct |
| 12 |
Correct |
0 ms |
384 KB |
Output is correct |
| 13 |
Correct |
0 ms |
384 KB |
Output is correct |
| 14 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 15 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 16 |
Correct |
0 ms |
384 KB |
Output is correct |
| 17 |
Correct |
1 ms |
384 KB |
Output is correct |
| 18 |
Correct |
0 ms |
384 KB |
Output is correct |
| 19 |
Correct |
1 ms |
384 KB |
Output is correct |
| 20 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
384 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 3 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 4 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 5 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 6 |
Correct |
1 ms |
384 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 9 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 10 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 11 |
Correct |
0 ms |
384 KB |
Output is correct |
| 12 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 13 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 14 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 15 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 16 |
Correct |
1 ms |
384 KB |
Output is correct |
| 17 |
Correct |
1 ms |
384 KB |
Output is correct |
| 18 |
Correct |
1 ms |
384 KB |
Output is correct |
| 19 |
Correct |
1 ms |
384 KB |
Output is correct |
| 20 |
Correct |
1 ms |
384 KB |
Output is correct |
| 21 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 22 |
Correct |
1 ms |
384 KB |
Output is correct |
| 23 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 24 |
Correct |
1 ms |
384 KB |
Output is correct |
| 25 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 26 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 27 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 28 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 29 |
Correct |
1 ms |
384 KB |
Output is correct |
| 30 |
Correct |
1 ms |
384 KB |
Output is correct |
| 31 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 32 |
Correct |
1 ms |
384 KB |
Output is correct |
| 33 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 34 |
Correct |
1 ms |
384 KB |
Output is correct |
| 35 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 36 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 37 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
| 38 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 39 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 40 |
Correct |
1 ms |
384 KB |
Output is correct |
| 41 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 42 |
Correct |
1 ms |
384 KB |
Output is correct |
| 43 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 44 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 45 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
