Submission #597381

#	Time	Username	Problem	Language	Result	Execution time	Memory
597381		skittles1412	Art Class (IOI13_artclass)	C++17	69 / 100	54 ms	5984 KiB

artclass

#include "bits/extc++.h"

using namespace std;

template <typename T>
void dbgh(const T& t) {
    cerr << t << endl;
}

template <typename T, typename... U>
void dbgh(const T& t, const U&... u) {
    cerr << t << " | ";
    dbgh(u...);
}

#ifdef DEBUG
#define dbg(...)                                              \
    cerr << "L" << __LINE__ << " [" << #__VA_ARGS__ << "]: "; \
    dbgh(__VA_ARGS__);
#else
#define dbg(...)
#define cerr   \
    if (false) \
    cerr
#endif

#define endl "\n"
#define long int64_t
#define sz(x) int((x).size())

extern "C" int style(int n,
                     int m,
                     int r[500][500],
                     int g[500][500],
                     int b[500][500]) {
    cerr << fixed << setprecision(5);
    auto eq = [&](int a, int b, int x) -> bool {
        return abs(a - b) <= x;
    };
    auto req = [&](int x1, int y1, int x2, int y2, int x) -> bool {
        return eq(r[x1][y1], r[x2][y2], x) && eq(g[x1][y1], g[x2][y2], x) &&
               eq(b[x1][y1], b[x2][y2], x);
    };
    {
        auto f1 = [&](int x) -> int {
            int ans = 0;
            for (int i = 0; i < n - 1; i++) {
                for (int j = 0; j < m - 1; j++) {
                    ans += req(i, j, i, j + 1, x) + req(i + 1, j, i, j, x);
                }
            }
            return ans;
        };
        int x2 = 0, x3 = 0;
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                int csum = r[i][j] + b[i][j] + g[i][j];
                x2 += csum >= 700;
                x3 += csum <= 50;
            }
        }
        double d1 = double(f1(10)) / (2 * n * m), d2 = double(x2) / (n * m),
               d3 = double(f1(20)) / (n * m), d4 = double(f1(20)) / (2 * n * m);
        cerr << d1 << " " << d2 << " " << d3 << endl;
        if (d1 > 0.9) {
            if (d2 > 0.05) {
                return 1;
            } else {
                return 4;
            }
        } else if (d1 > 0.5 && d2 > 0.05) {
            return 1;
        } else if (d1 > 0.5 || d2 < 1e-3) {
            return 2;
        } else {
            return 3;
        }
    }
}

Compilation message (stderr)

artclass.cpp: In function 'int style(int, int, int (*)[500], int (*)[500], int (*)[500])':
artclass.cpp:63:47: warning: unused variable 'd4' [-Wunused-variable]
   63 |                d3 = double(f1(20)) / (n * m), d4 = double(f1(20)) / (2 * n * m);
      |                                               ^~

• Subtask 1: 69 / 100