tongAmTrongDay

#include<iostream>
#include<cstdio>

using namespace std;

void doctep(float a[], int &n){
    FILE *fp;
    fp = fopen("input.txt", "r");
    fscanf(fp, "%d", &n);
    for(int i=0; i<n; i++){
        fscanf(fp, "%f", &a[i]);
    }
}

float tongam(float a[], int n){
    int sum=0;
    for(int i=0; i<n; i++){
        if(a[i] < 0) sum += a[i];
    }
    return sum;
}

main(){
    float a[100005];
    int n;
    doctep(a, n);
    cout<<tongam(a, n);
}