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  1. #include"bits/stdc++.h"
  2. using namespace std;
  3. int main()
  4. {
  5.     int a,b,k,counter=0;
  6.     string s;
  7.     cin>>a>>b;
  8.     cin>>s;
  9.     k=a+b+1;
  10.     if(!(s.size()==k))
  11.     {
  12.         cout<<"lala";
  13.         return 0;
  14.     }
  15.     for(int i=0;i<s.size();i++)
  16.     {
  17.         if((s[i]>='0' && s[i]<='9' && s[a]=='-')==false)
  18.         {
  19.             cout<<"no";
  20.             return 0;
  21.         }
  22.     } 
  23.      cout<<"yes";
  24. }
  25.  
Success #stdin #stdout 0s 4456KB
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stdin
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3 4
269-6650
stdout
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no
https://ideone.com/xSsllJ
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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