SMMR-071: Flip The Card (Small)

#include <bits/stdc++.h>

using namespace std;

int u[1000005],d[1000005];

int main(){
    int n,m,tem;
    cin >> n >>m;
    for(int i=1;i<=n;i++){
        cin >> u[i] >> d[i];
    }
    int q;
    for(int i=1;i<=m;i++){
        cin >> q;
        for(int j=1;j<=n;j++){
            if(u[j]<=q){
                tem = u[j];
                u[j] = d[j];
                d[j] = tem;
            }
        }
    }
    for(int i=1;i<=n;i++){
        cout << u[i] << endl;
    }
}