Submission #3013174

---

Source Code Expand

#include <bits/stdc++.h>
using namespace std;

int main(){
  int a,b;
  string s;
  cin>>a>>b>>s;
  if(s[a]!='-'){
  	cout << "No" << endl;
  	return 0;
  }
  s.erase(s.begin()+a);
  for(int i=0;i<s.size();++i){
  	if(s[i]-'0'<0||s[i]-'0'>9){
  		cout << "No" << endl;
		return 0;
  	}
  }
  cout << "Yes" << endl;
  return 0;
}

Submission Info

Judge Result