#include <bits/stdc++.h>
using namespace std;
#define int long long
vector<int> num;
int dp[20][11][11][2][2];
//pos, last digit, last last digit, tight, all 0's boolean
//10 -> no digit
int call(int pos, int lst, int lslst, int f, bool zero){
//cout << pos << " " << lst << " " << lslst << " " << f << '\n';
if (pos == num.size()){
//cout << lslst << " " << lst << '\n';
return 1;
}
if (dp[pos][lst][lslst][f][zero] != -1) return dp[pos][lst][lslst][f][zero];
int res = 0;
int lmt = 0;
if (f == 0){
lmt = num[pos];
}
else{
lmt = 9;
}
for (int dgt = 0; dgt <= lmt; dgt++){
int nf = f;
if ((f == 0) && (dgt < lmt)) nf = 1;
if ((dgt == 0) && (zero) && ((lst == 0) || (lslst == 0))){
res += call(pos+1,dgt,lst,nf,zero);
}
if ((dgt == lst) || (dgt == lslst)) continue;
int nz = zero;
if (dgt > 0) nz = false;
//cout << dgt << " " << lst << '\n';
res += call(pos+1,dgt,lst,nf,nz);
}
return dp[pos][lst][lslst][f][zero] = res;
}
int solve(int b){
num.clear();
while (b > 0){
num.push_back(b%10);
b /= 10;
}
reverse(num.begin(),num.end());
memset(dp,-1,sizeof(dp));
int res = call(0,10,10,0,1);
return res;
}
signed main() {
int a,b;
cin >> a >> b;
if (a != 0){
cout << solve(b)-solve(a-1);
}
else{
cout << solve(b);
}
return 0;
}
Compilation message
numbers.cpp: In function 'long long int call(long long int, long long int, long long int, long long int, bool)':
numbers.cpp:14:13: 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]
14 | if (pos == num.size()){
| ~~~~^~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 2 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 7 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
348 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 |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is 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 |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
348 KB |
Output is correct |
| 20 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
504 KB |
Output is correct |
| 5 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 6 |
Correct |
1 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 |
1 ms |
348 KB |
Output isn't correct |
| 14 |
Incorrect |
1 ms |
600 KB |
Output isn't correct |
| 15 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 16 |
Correct |
1 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 |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
1 ms |
600 KB |
Output is correct |
| 21 |
Correct |
1 ms |
348 KB |
Output is correct |
| 22 |
Correct |
0 ms |
348 KB |
Output is correct |
| 23 |
Correct |
1 ms |
348 KB |
Output is correct |
| 24 |
Correct |
1 ms |
348 KB |
Output is correct |
| 25 |
Correct |
0 ms |
348 KB |
Output is correct |
| 26 |
Correct |
1 ms |
344 KB |
Output is correct |
| 27 |
Correct |
0 ms |
348 KB |
Output is correct |
| 28 |
Correct |
1 ms |
348 KB |
Output is correct |
| 29 |
Correct |
0 ms |
348 KB |
Output is correct |
| 30 |
Correct |
1 ms |
348 KB |
Output is correct |
| 31 |
Correct |
1 ms |
604 KB |
Output is correct |
| 32 |
Correct |
0 ms |
348 KB |
Output is correct |
| 33 |
Correct |
1 ms |
348 KB |
Output is correct |
| 34 |
Correct |
0 ms |
348 KB |
Output is correct |
| 35 |
Correct |
0 ms |
600 KB |
Output is correct |
| 36 |
Correct |
1 ms |
600 KB |
Output is correct |
| 37 |
Correct |
0 ms |
348 KB |
Output is correct |
| 38 |
Correct |
1 ms |
348 KB |
Output is correct |
| 39 |
Correct |
0 ms |
348 KB |
Output is correct |
| 40 |
Correct |
0 ms |
348 KB |
Output is correct |
| 41 |
Correct |
1 ms |
348 KB |
Output is correct |
| 42 |
Correct |
1 ms |
348 KB |
Output is correct |
| 43 |
Correct |
1 ms |
344 KB |
Output is correct |
| 44 |
Correct |
0 ms |
348 KB |
Output is correct |
| 45 |
Correct |
1 ms |
344 KB |
Output is correct |
