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ExerciseHub/Luogu/SmallerSmallerSmaller/P3156 【深基15.例1】询问学号/map.cpp
2025-08-14 19:48:01 +08:00

19 lines
368 B
C++

#include <iostream>
#include <unordered_map>
using namespace std;
int main(){
unordered_map<int, int> a;
int n, m;
cin >> n >> m;
int tmp;
for(int i = 0; i < n; i++){
cin >> tmp;
a.emplace(make_pair(i + 1, tmp));
}
for(int i = 0; i < m; i++){
cin >> tmp;
cout << a.find(tmp)->second << endl;
}
return 0;
}