Just a Minim

#include <bits/stdc++.h>
using namespace std;
int main() {
	double sum = 0;
	int n;
	cin>>n;
	for(int i = 0; i < n; ++i) {
		int q;
		cin>>q;
		if(q == 0) sum += 2;
		if(q == 1) sum += 1;
		if(q == 2) sum += 1.0/2;
		if(q == 4) sum += 1.0/4;
		if(q == 8) sum += 1.0/8;
		if(q == 16) sum += 1.0/16;
	}
	cout<<fixed<<setprecision(15)<<sum<<'\n';

}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED