Submission #1074724

#	Time	Username	Problem	Language	Result	Execution time	Memory
1074724		mc061	Art Class (IOI13_artclass)	C++17	Compilation error	0 ms	0 KiB

artclass

#pragma once
#include <bits/stdc++.h>
using namespace std;

int diff(array<int, 3> pixel_1, array<int, 3> pixel_2) {
    int ret = 0;
    for (int i = 0; i < 3; ++i) {
        ret += abs(pixel_1[i] - pixel_2[i]);
    }
    return ret;
}

int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
    int similarities = 0;
    int diffs = 0;
    int green = 0;
    for (int t = 0; t < W; t += 10) {
        for (int i = 1; i < H; i += 10) {
            int df = diff({R[i][t], G[i][t], B[i][t]}, {R[i-1][t], G[i-1][t], B[i-1][t]});
            diffs += df > 40;
            similarities += df <= 40;
        }
    }
    // for (int t = 0; t < W; t++) {
    //     for (int i = 1; i < H; ++i) {
    //         green += G[i][t] >= 200 && (R[i][t] + B[i][t] <= 100);
    //     }
    // }
    // cerr << green << "\n";
    // cerr << diffs << " " << similarities << "\n";
    double p = (double)diffs / similarities;
    cerr << p << "\n";
    if (p > 1) {
        return 3;
    }
    if (p < 0.1) {
        if (p > 0.02)
            return 1;
        return 4;
    }
    return 2;
    // cout << diffs << " " << similarities << "\n";
    // return 0;
}

Compilation message (stderr)

artclass.cpp:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
artclass.cpp: In function 'int style(int, int, int (*)[500], int (*)[500], int (*)[500])':
artclass.cpp:16:9: warning: unused variable 'green' [-Wunused-variable]
   16 |     int green = 0;
      |         ^~~~~
/usr/bin/ld: /tmp/ccvtQJIN.o: in function `main':
grader.c:(.text.startup+0x200): undefined reference to `style'
collect2: error: ld returned 1 exit status