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34 lines
947 B
C++
34 lines
947 B
C++
#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <algorithm>
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#include <cctype>
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#include <cstdio>
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#include <cstring>
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#include <numeric>
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typedef long long int64;
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template <typename T>
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inline void readInt(T &x)
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{
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int ch = x = 0;
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while (!isdigit(ch = getchar()))
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;
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for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
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}
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int main()
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{
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int n;
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readInt(n);
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auto *A = new int64[n + 10], *C = new int64[n + 10];
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memset(A, 0, sizeof(int64) * (n + 10));
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memset(C, 0, sizeof(int64) * (n + 10));
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for (int i = 0; i < n; i++) readInt(A[i]);
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int64 tmp = std::accumulate(A, A + n, 0ll) / n;
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for (int i = 1; i < n; i++)
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C[i] = C[i - 1] + tmp - A[i];
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std::nth_element(C, C + (n >> 1), C + n);
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tmp = 0;
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for (int i = 0; i < n; i++)
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tmp += std::abs(C[i] - C[n >> 1]);
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printf("%lld", tmp);
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return 0;
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} |