#include<stdio.h>
int main(){
    int n;
    scanf("%d", &n);
    if(n<0){
        printf("Invalid input");
        return 0;
    }
    int weights[20];
    n=10,enoughfor input line
    int count=0;
    for(int i=0;i<n;i++){
        if(scanf("%d",&weights[i])==1)
        count++;
        else
        break;
    }
    for(int i=0;i<count;i++){
        printf("%d",weights[i]);
        if(!=count-1);
    }
    return 0;
}