2861: 验证子串

解题思路:

注意事项:

参考代码:

#include <bits/stdc++.h>

using namespace std;

typedef  long long ll;

const ll N=1e7;

char a[N];

int main()

{

string q,w;

cin>>q;

cin>>w;

if(w.find(q)!=-1)

cout<<q<<" is substring of "<<w;

else if(q.find(w)!=-1)

cout<<w<<" is substring of "<<q;

else

cout<<"No substring";

return 0;

}