Submission #413622

#	Time	Username	Problem	Language	Result	Execution time	Memory
413622		KoD	Art Class (IOI13_artclass)	C++17	100 / 100	98 ms	11884 KiB

artclass

#include <bits/stdc++.h>
#include "artclass.h"
 
template <class T> using Vec = std::vector<T>;

int solve(const int N, const Vec<int> R, const Vec<int> G, const Vec<int> B, const std::array<int, 4> D) {
    int sum = 0, cnt = 0;
    for (int i = 0; i < N; ++i) {
        for (const auto d: D) {
            const auto j = i + d;
            if (0 <= j and j < N) {
                sum += std::abs(R[i] - R[j]) + std::abs(G[i] - G[j]) + std::abs(B[i] - B[j]);
                cnt += 1;
            }
        }
    }
    // std::cerr << std::fixed << std::setprecision(10);
    // std::cerr << (double) sum / cnt << std::endl;
    if (sum <= 9 * cnt) {
        return 4;
    }
    if (sum <= 24 * cnt) {
        return 1;
    }
    if (sum >= 55 * cnt) {
        return 3;
    }
    return 2;
}
 
int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
    const int N = H * W;
    Vec<int> r(N), g(N), b(N);
    for (int i = 0; i < H; ++i) {
        for (int j = 0; j < W; ++j) {
            r[i * W + j] = R[i][j];
            g[i * W + j] = G[i][j];
            b[i * W + j] = B[i][j];
        }
    }
    return solve(N, r, g, b, std::array<int, 4>{W, 1, -W, -1});
}

• Subtask 1: 100 / 100