#include <bits/stdc++.h>
using namespace std;
long long a,b;
long long len_a=0,len_b=0;
long long digit_a[20],digit_b[20];
long long dp[20][2][2][11][11];
long long go(int id,int l,int r,int prv,int pv){
if(id==0) return 1LL;
if(dp[id][l][r][prv][pv]!=-1) return dp[id][l][r][prv][pv];
long long ret=0;
for(int i=0;i<=9;i++){
if(l==1 && i<digit_a[id]) continue;
if(r==1 && i>digit_b[id]) continue;
if(i==prv || i==pv) continue;
ret+=go(id-1,(l==1 && i==digit_a[id])?1:0,(r==1 && i==digit_b[id])?1:0,pv,i);
}
dp[id][l][r][prv][pv]=ret;
return ret;
}
int main(){
scanf("%lld %lld",&a,&b);
long long x=a;
while(x>0){
digit_a[++len_a]=x%10;
x/=10;
}
x=b;
while(x>0){
digit_b[++len_b]=x%10;
x/=10;
}
memset(dp,-1,sizeof(dp));
long long ans=0;
for(int i=len_b;i>=len_a;i--) ans+=go(i,1,1,10,10);
printf("%lld",ans);
}
Compilation message
numbers.cpp: In function 'int main()':
numbers.cpp:21:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld %lld",&a,&b);
~~~~~^~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 2 |
Incorrect |
2 ms |
500 KB |
Output isn't correct |
| 3 |
Correct |
2 ms |
500 KB |
Output is correct |
| 4 |
Incorrect |
2 ms |
596 KB |
Output isn't correct |
| 5 |
Correct |
2 ms |
596 KB |
Output is correct |
| 6 |
Incorrect |
2 ms |
596 KB |
Output isn't correct |
| 7 |
Incorrect |
2 ms |
596 KB |
Output isn't correct |
| 8 |
Incorrect |
2 ms |
596 KB |
Output isn't correct |
| 9 |
Correct |
3 ms |
596 KB |
Output is correct |
| 10 |
Correct |
2 ms |
596 KB |
Output is correct |
| 11 |
Correct |
2 ms |
620 KB |
Output is correct |
| 12 |
Correct |
2 ms |
620 KB |
Output is correct |
| 13 |
Correct |
2 ms |
620 KB |
Output is correct |
| 14 |
Incorrect |
2 ms |
620 KB |
Output isn't correct |
| 15 |
Incorrect |
2 ms |
620 KB |
Output isn't correct |
| 16 |
Correct |
2 ms |
636 KB |
Output is correct |
| 17 |
Correct |
2 ms |
636 KB |
Output is correct |
| 18 |
Correct |
2 ms |
636 KB |
Output is correct |
| 19 |
Correct |
2 ms |
640 KB |
Output is correct |
| 20 |
Incorrect |
2 ms |
640 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
640 KB |
Output is correct |
| 2 |
Correct |
2 ms |
640 KB |
Output is correct |
| 3 |
Correct |
2 ms |
640 KB |
Output is correct |
| 4 |
Correct |
23 ms |
640 KB |
Output is correct |
| 5 |
Incorrect |
2 ms |
640 KB |
Output isn't correct |
| 6 |
Correct |
2 ms |
640 KB |
Output is correct |
| 7 |
Incorrect |
2 ms |
640 KB |
Output isn't correct |
| 8 |
Incorrect |
2 ms |
640 KB |
Output isn't correct |
| 9 |
Incorrect |
2 ms |
640 KB |
Output isn't correct |
| 10 |
Incorrect |
2 ms |
640 KB |
Output isn't correct |
| 11 |
Correct |
2 ms |
640 KB |
Output is correct |
| 12 |
Incorrect |
2 ms |
640 KB |
Output isn't correct |
| 13 |
Incorrect |
2 ms |
640 KB |
Output isn't correct |
| 14 |
Incorrect |
2 ms |
640 KB |
Output isn't correct |
| 15 |
Incorrect |
2 ms |
640 KB |
Output isn't correct |
| 16 |
Correct |
2 ms |
640 KB |
Output is correct |
| 17 |
Correct |
2 ms |
640 KB |
Output is correct |
| 18 |
Correct |
2 ms |
640 KB |
Output is correct |
| 19 |
Correct |
2 ms |
640 KB |
Output is correct |
| 20 |
Correct |
2 ms |
640 KB |
Output is correct |
| 21 |
Correct |
2 ms |
640 KB |
Output is correct |
| 22 |
Correct |
2 ms |
704 KB |
Output is correct |
| 23 |
Correct |
2 ms |
704 KB |
Output is correct |
| 24 |
Correct |
2 ms |
704 KB |
Output is correct |
| 25 |
Correct |
3 ms |
704 KB |
Output is correct |
| 26 |
Correct |
2 ms |
704 KB |
Output is correct |
| 27 |
Correct |
2 ms |
704 KB |
Output is correct |
| 28 |
Correct |
2 ms |
704 KB |
Output is correct |
| 29 |
Correct |
2 ms |
704 KB |
Output is correct |
| 30 |
Correct |
2 ms |
704 KB |
Output is correct |
| 31 |
Correct |
2 ms |
704 KB |
Output is correct |
| 32 |
Correct |
2 ms |
704 KB |
Output is correct |
| 33 |
Correct |
2 ms |
704 KB |
Output is correct |
| 34 |
Correct |
2 ms |
704 KB |
Output is correct |
| 35 |
Correct |
2 ms |
704 KB |
Output is correct |
| 36 |
Correct |
2 ms |
704 KB |
Output is correct |
| 37 |
Correct |
2 ms |
704 KB |
Output is correct |
| 38 |
Correct |
2 ms |
704 KB |
Output is correct |
| 39 |
Correct |
2 ms |
704 KB |
Output is correct |
| 40 |
Correct |
2 ms |
704 KB |
Output is correct |
| 41 |
Correct |
2 ms |
704 KB |
Output is correct |
| 42 |
Correct |
2 ms |
704 KB |
Output is correct |
| 43 |
Correct |
2 ms |
704 KB |
Output is correct |
| 44 |
Correct |
2 ms |
704 KB |
Output is correct |
| 45 |
Correct |
2 ms |
704 KB |
Output is correct |
