#pragma GCC optimize("O3,unroll-loops")
#include <cstdio>
#include <ctype.h>

template <typename T> T rd_integer() {
    T ret = 0;
    bool minus = false;

    char c = getchar_unlocked();
    while (!isdigit(c)) minus |= (c == '-'), c = getchar_unlocked();
    while (isdigit(c)) ret = (ret << 1) + (ret << 3) + (c ^ 48), c = getchar_unlocked();

    return minus ? -ret : ret;
}
int rdi() { return rd_integer<int>(); }

int A[200000];

int main() {
    int N = rdi();

    for (int i = 0; i < N; ++i) A[i] = rdi();
    unsigned long long ret = 0;

    for (int d = 27; d >= 0; --d, ret *= 2) {
        int last = 0;
        for (int i = 0; i < N; ++i) {
            if ((A[i] >> d) & 1) last = i + 1;
            ret += last;
        }
    }

    printf("%lld\n", ret / 2);
}