Submission #440980

#	Time	Username	Problem	Language	Result	Execution time	Memory
440980		Namnamseo	Art Class (IOI13_artclass)	C++17	100 / 100	69 ms	6040 KiB

artclass

#include "artclass.h"
using namespace std;

const float coeff[4][3*4*4+3] = {{ -63.0400,  -29.9633,  -30.4937,  139.9450, -133.5472,   75.6406,
    4.1946,   92.0297,   -7.4521,   67.0902,  -40.1558,  -96.8360,
   30.4891,  -61.8195,   29.1258, -114.8488,  180.2290,  -62.8737,
   40.4461, -134.5308,   12.7274,  -70.8499,  -18.0083,  144.1649,
  161.6808,   -2.9197,    0.6342, -204.6375,   18.8772,  134.2941,
  102.3418,   30.7536, -178.6157,  -98.2650, -119.1426,  262.0974,
  -41.6917,  -20.1880,   27.1856,  -81.1678,  161.6122, -125.1560,
   67.7421,   52.9095,  -56.8205,   93.8830,   10.6928, -158.8677,
   24.0739, -138.4683,   93.5732},
{  39.2376,  251.2074, -209.7736, -200.1912,  260.1740, -115.3471,
 -208.2322,  218.9643,  -52.4071,   23.7714,  265.8700, -174.4878,
  -46.6126, -229.2821,  175.5157, -154.5625,   -0.3871,  232.1231,
  126.8237, -219.3655,   93.0219,  211.2868, -227.5675,   23.1429,
  120.5473, -111.1882,   54.8543, -161.6028,  220.9912, -247.8992,
  125.2693,  159.3035,   -7.7914,   63.2907, -255.2971, -236.0402,
 -245.1792,  206.8028,    3.2134,  -43.4771,   38.2679,  -14.9989,
   56.1295, -218.6725,  246.3542,   41.0153,  -14.1745,  173.7840,
 -173.8779,  297.9964, -256.6154},
{ 123.7566,   80.2844, -200.7963, -174.1101,  100.0404,   82.7393,
  -82.9470, -199.4397,  243.1159,   97.3223,   45.5022, -103.7382,
 -142.5100,   94.3229,   18.3019,  169.9270, -177.5642,    7.8294,
 -142.6725,   84.9434,  144.3373,   18.7439,  158.3002, -234.7830,
  -59.5506,  -25.6033,   88.6889,  231.9213,   19.9985, -195.3839,
   52.8407, -114.7098,   28.7682,   56.6459,  172.2831, -204.4079,
    2.0981,  -63.1707,   32.3486,  101.2075, -172.0590,   34.3549,
  -37.3782, -124.5983,  159.1983, -162.2696,   44.7576,  125.7577,
  -76.8405,   78.4085,  -42.2169},
{ -66.3745, -102.2115,  224.5301,   76.2889,  -23.8942, -176.6279,
  119.3946,  129.0869, -251.9080, -175.8489, -121.1599,  217.4591,
  144.9682,    9.7203,  -91.4585,  -86.0869,  -43.0534,   75.5384,
  128.1504,  113.8718, -180.1230,   70.4334, -159.6553,  183.9166,
 -144.6375,   49.8998, -107.8242,  -69.5453,  -62.0033,  153.6426,
 -191.2019,   79.3045,  205.9442,   87.3162,   -3.8528, -225.4161,
  110.5283,   83.2811,  -82.4912,  -21.9167,   -7.6361,  147.5880,
  -48.4723,  118.7705, -184.1634,   93.6264,  -71.1094,   81.8497,
   70.1424, -143.5856,   28.5372}};

int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
	float key[3*4*4+3];
    int (*(img[3]))[500] = {R, G, B};
	for (int i=0; i<3; ++i) {
		long long t = 0;
        for (int j=0; j<H; ++j) for (int k=0; k<W; ++k) {
        	t += img[i][j][k];
        }
        key[3*4*4 + i] = (t / (H*W)) / 255.0;
	}
    for (int t=0, i=0; i<4; ++i) for (int j=0; j<4; ++j) for (int c=0; c<3; ++c) {
        key[t++] = img[c][i][j] / 255.0;
    }

	double ans[4];
	for (int i=0; i<4; ++i) {
		ans[i] = 0;
		for (int j=0; j<3*4*4+3; ++j) {
			ans[i] += coeff[i][j] * key[j];
		}
	}

	int mi = 0;
	for (int i=1; i<4; ++i) if (ans[mi] < ans[i]) mi = i;
	return mi+1;
}

Compilation message (stderr)

artclass.cpp: In function 'int style(int, int, int (*)[500], int (*)[500], int (*)[500])':
artclass.cpp:43:11: warning: unnecessary parentheses in declaration of 'img' [-Wparentheses]
   43 |     int (*(img[3]))[500] = {R, G, B};
      |           ^

• Subtask 1: 100 / 100