题解 | #判断元素是否出现#
判断元素是否出现
https://www.nowcoder.com/practice/0787459e92bc4360ba48b094b7f21577
#include<bits/stdc++.h>
using namespace std;
int main(){
//write your code here......
int n,m,r;
cin>>n>>m;
map<int,int>s;
for(int i=0;i<n;i++)
{
if(cin>>r)
s[r]++;
}
for(int i=0;i<m;i++)
{
int p;
if(cin>>p)
{
if(s[p]>0)
cout<<"yes\n";
else
cout<<"no\n";}
}
return 0;
}
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