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;
cin >> n >> m;
map<int, int> maps;
int num;
for (int i{0}; i < n; i++) {
cin >> num;
maps[num]++;
}
vector<int> v;
for (int i{0}; i < m; i++) {
cin >> num;
v.push_back(num);
}
for (auto& item: v) {
if (maps[item] > 0) {
cout << "yes" << endl;
} else {
cout << "no" << endl;
}
}
return 0;
}
