#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll a,b,dp[20][180][2][2][2];
vector<ll> v;
void build(ll a){
if(a<10){
v.push_back(a);
return;
}
build(a/10);
v.push_back(a%10);
}
ll rec(ll idx,ll sum,ll t,ll s,ll u,ll last1,ll last2){
if(idx==v.size()) return 1;
if(dp[idx][sum][t][s][u]!=-1) return dp[idx][sum][t][s][u];
ll i,up=9,ans=0;
if(!t) up=v[idx];
for(i=0;i<=up;i++){
if(s && last2==i) continue;
if(u && last1==i) continue;
ans+=rec(idx+1,sum+i,t|(i<up),s|(i>0),u|s,last2,i);
}
return dp[idx][sum][t][s][u]=ans;
}
ll solve(ll a){
if(a==-1) return 0;
v.clear();
build(a);
memset(dp,-1,sizeof dp);
return rec(0,0,0,0,0,0,0);
}
int main(){
cin >> a >> b;
cout << solve(b)-solve(a-1);
}
Compilation message
numbers.cpp: In function 'long long int rec(long long int, long long int, long long int, long long int, long long int, long long int, long long int)':
numbers.cpp:15:8: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
15 | if(idx==v.size()) return 1;
| ~~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
600 KB |
Output is correct |
| 2 |
Correct |
1 ms |
604 KB |
Output is correct |
| 3 |
Correct |
1 ms |
604 KB |
Output is correct |
| 4 |
Correct |
0 ms |
604 KB |
Output is correct |
| 5 |
Correct |
0 ms |
604 KB |
Output is correct |
| 6 |
Correct |
1 ms |
600 KB |
Output is correct |
| 7 |
Correct |
1 ms |
600 KB |
Output is correct |
| 8 |
Correct |
0 ms |
604 KB |
Output is correct |
| 9 |
Correct |
1 ms |
604 KB |
Output is correct |
| 10 |
Correct |
0 ms |
440 KB |
Output is correct |
| 11 |
Correct |
0 ms |
604 KB |
Output is correct |
| 12 |
Correct |
0 ms |
604 KB |
Output is correct |
| 13 |
Correct |
0 ms |
604 KB |
Output is correct |
| 14 |
Correct |
0 ms |
604 KB |
Output is correct |
| 15 |
Correct |
1 ms |
604 KB |
Output is correct |
| 16 |
Correct |
0 ms |
448 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
0 ms |
604 KB |
Output is correct |
| 19 |
Correct |
1 ms |
604 KB |
Output is correct |
| 20 |
Correct |
0 ms |
604 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
604 KB |
Output is correct |
| 2 |
Correct |
1 ms |
600 KB |
Output is correct |
| 3 |
Correct |
0 ms |
604 KB |
Output is correct |
| 4 |
Correct |
1 ms |
604 KB |
Output is correct |
| 5 |
Correct |
0 ms |
604 KB |
Output is correct |
| 6 |
Correct |
1 ms |
616 KB |
Output is correct |
| 7 |
Correct |
1 ms |
600 KB |
Output is correct |
| 8 |
Correct |
1 ms |
600 KB |
Output is correct |
| 9 |
Correct |
1 ms |
604 KB |
Output is correct |
| 10 |
Correct |
1 ms |
600 KB |
Output is correct |
| 11 |
Correct |
1 ms |
600 KB |
Output is correct |
| 12 |
Correct |
1 ms |
604 KB |
Output is correct |
| 13 |
Correct |
1 ms |
604 KB |
Output is correct |
| 14 |
Correct |
1 ms |
604 KB |
Output is correct |
| 15 |
Correct |
1 ms |
604 KB |
Output is correct |
| 16 |
Correct |
0 ms |
604 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
1 ms |
444 KB |
Output is correct |
| 19 |
Correct |
1 ms |
600 KB |
Output is correct |
| 20 |
Correct |
1 ms |
604 KB |
Output is correct |
| 21 |
Correct |
0 ms |
444 KB |
Output is correct |
| 22 |
Correct |
1 ms |
804 KB |
Output is correct |
| 23 |
Correct |
1 ms |
604 KB |
Output is correct |
| 24 |
Correct |
1 ms |
604 KB |
Output is correct |
| 25 |
Correct |
1 ms |
604 KB |
Output is correct |
| 26 |
Correct |
1 ms |
604 KB |
Output is correct |
| 27 |
Correct |
1 ms |
604 KB |
Output is correct |
| 28 |
Correct |
0 ms |
604 KB |
Output is correct |
| 29 |
Correct |
1 ms |
604 KB |
Output is correct |
| 30 |
Correct |
1 ms |
604 KB |
Output is correct |
| 31 |
Correct |
1 ms |
604 KB |
Output is correct |
| 32 |
Correct |
1 ms |
604 KB |
Output is correct |
| 33 |
Correct |
1 ms |
600 KB |
Output is correct |
| 34 |
Correct |
0 ms |
604 KB |
Output is correct |
| 35 |
Correct |
1 ms |
604 KB |
Output is correct |
| 36 |
Correct |
1 ms |
604 KB |
Output is correct |
| 37 |
Correct |
1 ms |
604 KB |
Output is correct |
| 38 |
Correct |
0 ms |
444 KB |
Output is correct |
| 39 |
Correct |
1 ms |
604 KB |
Output is correct |
| 40 |
Correct |
1 ms |
600 KB |
Output is correct |
| 41 |
Correct |
1 ms |
604 KB |
Output is correct |
| 42 |
Correct |
1 ms |
604 KB |
Output is correct |
| 43 |
Correct |
1 ms |
600 KB |
Output is correct |
| 44 |
Correct |
1 ms |
604 KB |
Output is correct |
| 45 |
Correct |
1 ms |
604 KB |
Output is correct |
