-
Notifications
You must be signed in to change notification settings - Fork 0
/
A_Insert_Digit.cpp
52 lines (50 loc) · 976 Bytes
/
A_Insert_Digit.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
#include <map>
#include <set>
#include <stack>
#include <vector>
#include <math.h>
#include <string.h>
#include <iostream>
#include <algorithm>
#include <unordered_set>
#include <unordered_map>
#define ll long long
#define py cout << "YES" << endl
#define pn cout << "NO" << endl
using namespace std;
// #define m 1e9+7
string func(int n, int d, string s)
{
string res = "";
bool flag = false;
for (int i = 0; i < n; i++)
{
if (s[i] - '0' >= d || flag == true)
{
res += s[i];
}
else
{
res += to_string(d);
res += s[i];
flag = true;
}
}
if (flag == false)
res += to_string(d);
return res;
}
int main()
{
int t = 1;
cin >> t;
while (t--)
{
int n, d;
cin >> n >> d;
string s;
cin >> s;
cout << func(n, d, s) << endl;
}
return 0;
}