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2 years ago
#include <bits/stdc++.h>
using namespace std;
int a[1001] = {0};
int main() {
//输入+输出重定向
freopen("../1133.txt", "r", stdin);
int n, q;
//n:图书馆里书的数量,q:读者的数量
cin >> n >> q;
//接下来的 n 行,每行包含一个正整数,代表图书馆里某本书的图书编码。
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
sort(a + 1, a + n + 1);
//接下来的 q 行,每行包含两个正整数,以一个空格分开,第一个正整数代表图书馆里读者的需求码的长度,第二个正整数代表读者的需求码
for (int i = 1; i <= q; ++i) {
int x, y;
cin >> x >> y;
//从a中去遍历查找如果是以x位10取模命中就是解
bool found = false;
for (int j = 1; j <= n; ++j) {
if (a[j] % int(pow(10, x)) == y) {
found = true;
cout << a[j] << endl;
break;
}
}
if (!found) cout << -1 << endl;
}
//关闭文件
fclose(stdin);
return 0;
}