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P6102 [EER2]谔运算

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R54857077
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Baoshuo Ren 2021-08-03 14:31:11 +08:00 committed by Baoshuo Ren
parent 59b7cf75f3
commit aa714607b4
Signed by: baoshuo
GPG Key ID: 70F90A673FB1AB68
1 changed files with 28 additions and 0 deletions
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Luogu/problem/P6102/P6102.cpp Normal file
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#include <bits/stdc++.h>
using namespace std;
int n, x, y, xs, ys, sum;
unsigned int ans, a[500005];
int main() {
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
sum = n * n;
for (int i = 0; i < 32; i++) {
x = y = xs = ys = 0;
for (int j = 1; j <= n; j++) {
if ((a[j] >> i) & 1) xs++;
}
ys = n - xs;
for (int j = 1; j <= n; j++) {
x = xs * n + ys * xs;
y = ys * n + xs * ys;
}
ans += (x * y + (sum - x) * (sum - y)) << i;
}
cout << ans << endl;
return 0;
}