#include<bits/stdc++.h>
using namespace std;
using ll=long long;
vector<int> digit;
ll dp[20][2][19][19];
ll solve(int id,int flag,int last1,int last2,int check){
//cout<<last1<<" "<<last2<<"#"<<endl;
if(id==digit.size()&&check==1) return 1;
if(id==digit.size()&&check==0) return 0;
if(dp[id][flag][last1][last2]!=-1) return dp[id][flag][last1][last2];
int pos;
if(flag==1){
pos=9;
}
if(flag==0){
pos=digit[id];
}
ll res=0;
for(int i=0;i<=pos;++i){
int preflag=flag;
int prelast1=last1;
int prelast2=last2;
int precheck=check;
if(i!=pos){
preflag=1;
}
if(i==prelast1){
precheck=false;
}
if(i==prelast2){
precheck=false;
}
//cout<<prelast1<<" "<<prelast2<<" "<<i<<"#";
if(precheck==true){
prelast1=i;
prelast2=last1;
//cout<<prelast1<<" "<<prelast2<<" "<<i<<"#";
res+=solve(id+1,preflag,prelast1,prelast2,precheck);
}
}
return dp[id][flag][last1][last2]=res;
}
ll get(ll a){
digit.clear();
while(a>0){
digit.push_back(a%10);
a/=10;
}
reverse(digit.begin(),digit.end());
// for(auto item:digit) cout<<item<<" ";
memset(dp,-1,sizeof(dp));
ll kqua=solve(0,0,18,18,1);
return kqua;
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
ll a;
ll b;
cin>>a>>b;
//cout<<get(a);
//cout<<get(b)<<" "<<get(a);
ll kqua=get(b)-get(a-1);
cout<<kqua;
}
Compilation message
numbers.cpp: In function 'll solve(int, int, int, int, int)':
numbers.cpp:8:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
8 | if(id==digit.size()&&check==1) return 1;
| ~~^~~~~~~~~~~~~~
numbers.cpp:9:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
9 | if(id==digit.size()&&check==0) return 0;
| ~~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
324 KB |
Output isn't correct |
| 2 |
Incorrect |
1 ms |
328 KB |
Output isn't correct |
| 3 |
Correct |
1 ms |
324 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 5 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 6 |
Incorrect |
1 ms |
328 KB |
Output isn't correct |
| 7 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
324 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
324 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 15 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Incorrect |
1 ms |
320 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
320 KB |
Output is correct |
| 2 |
Correct |
1 ms |
328 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Incorrect |
1 ms |
324 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 9 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 10 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 11 |
Correct |
1 ms |
328 KB |
Output is correct |
| 12 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 13 |
Incorrect |
1 ms |
324 KB |
Output isn't correct |
| 14 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 15 |
Incorrect |
1 ms |
320 KB |
Output isn't correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
320 KB |
Output is correct |
| 18 |
Correct |
1 ms |
324 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
1 ms |
412 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
1 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
328 KB |
Output is correct |
| 24 |
Correct |
1 ms |
340 KB |
Output is correct |
| 25 |
Correct |
1 ms |
324 KB |
Output is correct |
| 26 |
Correct |
1 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
340 KB |
Output is correct |
| 28 |
Correct |
1 ms |
320 KB |
Output is correct |
| 29 |
Correct |
1 ms |
340 KB |
Output is correct |
| 30 |
Correct |
1 ms |
340 KB |
Output is correct |
| 31 |
Correct |
1 ms |
324 KB |
Output is correct |
| 32 |
Correct |
1 ms |
340 KB |
Output is correct |
| 33 |
Correct |
1 ms |
340 KB |
Output is correct |
| 34 |
Correct |
1 ms |
340 KB |
Output is correct |
| 35 |
Correct |
1 ms |
340 KB |
Output is correct |
| 36 |
Correct |
1 ms |
340 KB |
Output is correct |
| 37 |
Correct |
1 ms |
340 KB |
Output is correct |
| 38 |
Correct |
1 ms |
324 KB |
Output is correct |
| 39 |
Correct |
1 ms |
340 KB |
Output is correct |
| 40 |
Correct |
1 ms |
340 KB |
Output is correct |
| 41 |
Correct |
1 ms |
340 KB |
Output is correct |
| 42 |
Correct |
1 ms |
340 KB |
Output is correct |
| 43 |
Correct |
1 ms |
340 KB |
Output is correct |
| 44 |
Correct |
1 ms |
320 KB |
Output is correct |
| 45 |
Correct |
1 ms |
340 KB |
Output is correct |
