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- #include <iostream>
- #include<vector>
- using namespace std;
- bool check(int n){
- int pre = -1, r;
- while(n != 0){
- r = n % 10;
- n /= 10;
- if(pre == -1)
- pre = r;
- else{
- if(pre != r + 1)
- return false;
- }
- }
- return true;
- }
- void seqDigits(int l, int r){
- vector<int> v;
- for(int i = l; i <= r; i++){
- if(check(i)){
- v.push_back(i);
- }
- }
- for(int i : v)
- cout << i << " ";
- }
- int main()
- {
- int l, r;
- cin >> l >> r;
- seqDigits(l, r);
- return 0;
- }
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