#include <algorithm>
#include <limits>
#include <vector>

long long maxSliceSum(const std::vector<int>& a)
{
    long long tmp = std::numeric_limits<long long>::min();
    long long max = std::numeric_limits<long long>::min();

    for (int v : a) {
        tmp = std::max(tmp + v, static_cast<long long>(v));
        max = std::max(max, tmp);
    }

    return max;
}