// header file
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
// pragma
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
// macros
#define endl "\n"
#define ll long long
#define mp make_pair
#define ins insert
#define lb lower_bound
#define pb push_back
#define ub upper_bound
#define lll __int128
#define fi first
#define se second
using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_multiset;
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;
ll solve(ll a) {
if(a < 0)
return 0;
// palindrome free -> yang penting 2 bilangan terakhir
string s = to_string(a);
// fi -> idx
// se -> second last digit
// ti -> last digit
// fo -> follow s or not
ll dp[s.size()][10][10][2];
memset(dp, 0, sizeof(dp));
for(int i = 0; i < s.size(); ++i) {
if(i == 0) {
for(int j = 0; j < s[i] - '0'; ++j)
dp[i][0][j][0] = 1;
dp[i][0][s[i] - '0'][1] = 1;
}
else if(i == 1) {
for(int j = 0; j < 10; ++j) {
// ambil dari non leadingnya terserah
// tidak boleh sama dengan pr
for(int k = 0; k < 10; ++k) {
if(k == j)
continue;
// j last digit
// k second last
dp[i][k][j][0] += dp[i - 1][0][k][0];
if(j == s[i] - '0' && k == s[i - 1] - '0')
dp[i][k][j][1] += dp[i - 1][0][k][1];
else if(j < s[i] - '0')
dp[i][k][j][0] += dp[i - 1][0][k][1];
}
}
}
else {
for(int j = 0; j < 10; ++j) {
for(int k = 0; k < 10; ++k) {
if(j == k)
continue;
for(int l = 0; l < 10; ++l) {
if(j == l || k == l)
continue;
// j last digit
// k second last
// l third last
dp[i][k][j][0] += dp[i - 1][l][k][0];
if(j == s[i] - '0' && k == s[i - 1] - '0' && l == s[i - 2] - '0')
dp[i][k][j][1] += dp[i - 1][l][k][1];
else if(j < s[i] - '0')
dp[i][k][j][0] += dp[i - 1][l][k][1];
}
}
}
}
}
ll ret = 0;
for(int i = 0; i < 10; ++i)
for(int j = 0; j < 10; ++j)
ret += dp[s.size() - 1][i][j][0] + dp[s.size() - 1][i][j][1];
return ret;
}
int main() {
ios_base::sync_with_stdio(0); cin.tie(NULL);
ll a, b;
cin >> a >> b;
// find res for b and find res for a
cout << solve(b) - solve(a - 1) << endl;
return 0;
}
Compilation message
numbers.cpp: In function 'long long int solve(long long int)':
numbers.cpp:34:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
34 | for(int i = 0; i < s.size(); ++i) {
| ~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
328 KB |
Output isn't correct |
| 2 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 5 |
Incorrect |
0 ms |
324 KB |
Output isn't correct |
| 6 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 7 |
Incorrect |
1 ms |
328 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
320 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 15 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 16 |
Correct |
1 ms |
324 KB |
Output is correct |
| 17 |
Correct |
1 ms |
320 KB |
Output is correct |
| 18 |
Correct |
0 ms |
328 KB |
Output is correct |
| 19 |
Correct |
0 ms |
324 KB |
Output is correct |
| 20 |
Incorrect |
0 ms |
324 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
340 KB |
Output is correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
328 KB |
Output is correct |
| 5 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
328 KB |
Output isn't correct |
| 9 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 10 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 13 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 14 |
Incorrect |
0 ms |
320 KB |
Output isn't correct |
| 15 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 16 |
Correct |
0 ms |
340 KB |
Output is correct |
| 17 |
Correct |
0 ms |
328 KB |
Output is correct |
| 18 |
Correct |
0 ms |
320 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
0 ms |
340 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
0 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
340 KB |
Output is correct |
| 24 |
Correct |
0 ms |
340 KB |
Output is correct |
| 25 |
Correct |
1 ms |
340 KB |
Output is correct |
| 26 |
Correct |
1 ms |
320 KB |
Output is correct |
| 27 |
Correct |
1 ms |
340 KB |
Output is correct |
| 28 |
Correct |
0 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 |
0 ms |
340 KB |
Output is correct |
| 32 |
Correct |
0 ms |
324 KB |
Output is correct |
| 33 |
Correct |
1 ms |
328 KB |
Output is correct |
| 34 |
Correct |
1 ms |
340 KB |
Output is correct |
| 35 |
Correct |
0 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 |
340 KB |
Output is correct |
| 39 |
Correct |
0 ms |
248 KB |
Output is correct |
| 40 |
Correct |
0 ms |
340 KB |
Output is correct |
| 41 |
Correct |
1 ms |
340 KB |
Output is correct |
| 42 |
Correct |
0 ms |
340 KB |
Output is correct |
| 43 |
Correct |
1 ms |
340 KB |
Output is correct |
| 44 |
Correct |
0 ms |
340 KB |
Output is correct |
| 45 |
Correct |
1 ms |
340 KB |
Output is correct |
