50 lines
874 B
C++
50 lines
874 B
C++
#include <iostream>
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#include <graphics.h>
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#include <conio.h>
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#include <fstream>
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#include <cstring>
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#include <cctype>
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#include <cstdio>
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using namespace std;
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int main() {
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ifstream f;
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ofstream d;
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f.open("input.txt");
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d.open("output.txt");
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int N, a[50], err=0, sum=0;
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double rest;
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f>>N;
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for (int i=1; i<=N; i++) {
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f>>a[i];
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}
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for (int i=1; i<=N; i++) {
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sum=sum+a[i];
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}
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rest=(double)sum/N;
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if (rest<=3.5) {
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d<<err;
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f.close();
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d.close();
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return 0;
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}
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int stop=1, j=1;
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while (stop) {
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a[j]=1;
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err++;
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sum=0;
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for (int i=1; i<=N; i++) {
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sum=sum+a[i];
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}
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rest=(double)sum/N;
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if (rest<=3.5) stop=0;
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j++;
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}
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d<<err;
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cout<<err<<endl;
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f.close();
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d.close();
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system ("pause");
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return 0;
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}
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