#include <bits/stdc++.h>
using namespace std;
int main(){
vector<bool> test = { true, true, true, false,
true, true, true, true,
true, false, true, false,
true, false, false, true,
true, true, true, true,
false, false, true, true };
unsigned int sum = accumulate(test.begin(), test.end(), 0u);
cout << sum << endl;
return 0;
}
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