题解

很简单

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    int m,k;
    cin>>n;
    int a[n+1];
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    cin>>m>>k;
    for(int i=1;i<=n;i++){
        cout<<a[i]<<" ";
        if(a[i]==m){//在数后面输出
            cout<<k<<" ";
        }
	}
    return 0;
}