#include <stdio.h>

int main(){
    int N, C[100], i;
    int cnt = 0, money = 0;

    scanf("%d\n", &N);
    for(i = 0; i < N; i++){
        scanf("%d", &C[i]);
        cnt += C[i];
    }
    for(i = 0; i < N; i++){
        if(C[i] <= cnt/10){
            money += 300000;
        }
    }
    printf("%d\n", money/10000);

    return 0;
}