#include <bits/stdc++.h>
using namespace std;
#define fast ios::sync_with_stdio(0);cin.tie(0);
typedef long long ll;
#define f first
#define s second
#define MAXN 100005
#define int long long
ll count(string x) {
int len = x.length();
vector<vector<vector<vector<int>>>> dp(11, vector<vector<vector<int>>>(11, vector<vector<int>>(2, vector<int>(2, 0))));
dp[10][10][0][0] = 1;
for (int i = 0; i < len; i++) {
vector<vector<vector<vector<int>>>> new_dp(11, vector<vector<vector<int>>>(11, vector<vector<int>>(2, vector<int>(2, 0))));
for (auto not_leading : {false, true}) {
for (auto smaller : {false, true}) {
for (int second_last = 0; second_last <= 10; second_last++) {
for (int last_digit = 0; last_digit <= 10; last_digit++) {
for (int digit = 0; digit < 10; digit++) {
if (!smaller && digit > x[i]-'0')
break;
if (not_leading && (digit == last_digit || digit == second_last))
continue;
new_dp[digit][last_digit][smaller || digit < x[i]-'0'][not_leading || digit != 0] += dp[last_digit][second_last][smaller][not_leading];
}
}
}
}
}
dp = new_dp;
}
ll ans = 0;
for (int second_last = 0; second_last <= 10; second_last++)
for (int last_digit = 0; last_digit <= 10; last_digit++)
for (auto smaller : {false, true})
for (auto not_leading : {false, true})
ans += dp[last_digit][second_last][smaller][not_leading];
return ans;
}
signed main() {
fast
ll a, b;
cin >> a >> b;
if (a == 0) {
string strB = to_string(b);
cout << count(strB) << endl;
} else {
string strA = to_string(a-1), strB = to_string(b);
ll ans = count(strB) - count(strA);
cout << ans << endl;
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
2 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
7 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
8 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 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 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
2 ms |
340 KB |
Output is correct |
4 |
Correct |
2 ms |
340 KB |
Output is correct |
5 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Incorrect |
1 ms |
340 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 |
340 KB |
Output is correct |
12 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
13 |
Incorrect |
1 ms |
340 KB |
Output isn't 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 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
340 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 |
340 KB |
Output is correct |
24 |
Correct |
2 ms |
340 KB |
Output is correct |
25 |
Correct |
2 ms |
340 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 |
340 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 |
340 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 |
2 ms |
340 KB |
Output is correct |
38 |
Correct |
1 ms |
340 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 |
2 ms |
360 KB |
Output is correct |
43 |
Correct |
1 ms |
340 KB |
Output is correct |
44 |
Correct |
1 ms |
340 KB |
Output is correct |
45 |
Correct |
1 ms |
340 KB |
Output is correct |