怎么了
by ethan0919 @ 2023-10-13 17:39:46
```cpp
#include <iostream>
#include<algorithm>
#include <cmath>
using namespace std;
int a[10000];
int main(){
int n,m;
cin>>n>>m;
for (int i=0;i<n;i++) {
cin>>a[i];
}
sort(a,a+n);
while (m--) {
int x,y;
cin>>x>>y;
for (int i=0;i<n;i++) {
if (y==a[i] % (int)pow(10,x)) {
cout<<a[i]<<endl;
break;
}
if (i==n-1) {
cout<<-1<< endl;
}
}
}
return 0;
}
```
by ethan0919 @ 2023-10-13 17:41:02
```
#include<bits/stdc++.h>
using namespace std;
int n,q;
int a[1005];
bool check(int p,int k,int len){
for(int i=1;i<=len;i++){
if(p%10 !=k%10) return false;
p/=10;k/=10;
}
return true;
}
int main(){
cin>>n>>q;
for(int i=1;i<=n;i++) cin>>a[i];
while(q--){
int m,num;cin>>m>>num;
int minn=1e8;
for(int i=1;i<=n;i++){
if(check(a[i],num,m)){
minn =min(minn,a[i]);
}
}
if(minn==1e8) cout<<-1<<endl;
else cout<<minn<<endl;
}
return 0;
}
```
by zhang13095534103 @ 2024-01-14 18:38:55