, problem: (B) Valued Keys Solution In C/C++. #include using namespace){kind=link}
#include<bits/stdc++.h> using namespace std; int main() { string a,b; cin>>a>>b; int l=a.length(); for(int i=0;i<l;i++) { if(a[i]<b[i]) { cout<<"-1"; return 0; } } cout<<b; }
Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2), problem: (B) Valued Keys Solution In C/C++
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