Submission #1035804

#	Time	Username	Problem	Language	Result	Execution time	Memory
1035804		c2zi6	Art Class (IOI13_artclass)	C++14	93 / 100	54 ms	9156 KiB

artclass

#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define all(a) (a).begin(), (a).end()
#define replr(i, a, b) for (int i = int(a); i <= int(b); ++i)
#define reprl(i, a, b) for (int i = int(a); i >= int(b); --i)
#define rep(i, n) for (int i = 0; i < int(n); ++i)
#define mkp(a, b) make_pair(a, b)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<PII> VPI;
typedef vector<VI> VVI;
typedef vector<VVI> VVVI;
typedef vector<VPI> VVPI;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
typedef vector<VL> VVL;
typedef vector<VVL> VVVL;
typedef vector<VPL> VVPL;
template<class T> T setmax(T& a, T b) {if (a < b) return a = b; return a;}
template<class T> T setmin(T& a, T b) {if (a < b) return a; return a = b;}
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template<class T>
using indset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#include "artclass.h"

struct PIXEL {
    int r, g, b;
};
typedef vector<PIXEL> VPIXEL;
typedef vector<VPIXEL> VVPIXEL;

bool similar(const PIXEL& a, const PIXEL& b, int maxdist = 80) {
    int dr = abs(a.r - b.r);
    int dg = abs(a.g - b.g);
    int db = abs(a.b - b.b);
    int dist = sqrt(dr*dr + dg*dg + db*db);
    return dist <= maxdist;
}

bool isgreen(const PIXEL& a) {
    bool ret = false;
    ret |= similar(a, {0, 255, 0}, 200);
    ret |= similar(a, {0, 100, 0}, 50);
    return ret;
}

int n, m;
VVPIXEL image;

VPI harevan(int i, int j) {
    VPI ret;
    VVPIXEL& a = image;
    if (i > 0 && j > 0)     ret.pb({i-1, j-1});
    if (i > 0)              ret.pb({i-1, j});
    if (i > 0 && j < m-1)   ret.pb({i-1, j+1});
    if (j > 0)              ret.pb({i, j-1});
    if (j < m-1)            ret.pb({i, j+1});
    if (i < n-1 && j > 0)   ret.pb({i+1, j-1});
    if (i < n-1)            ret.pb({i+1, j});
    if (i < n-1 && j < m-1) ret.pb({i+1, j+1});
    return ret;
}

int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
    n = H;
    m = W;
    image = VVPIXEL(n, VPIXEL(m));
    rep(i, n) rep(j, m) image[i][j] = PIXEL{R[i][j], G[i][j], B[i][j]};

    int dif = 0;
    int grn = 0;
    rep(i, n) rep(j, m) {
        if (i) dif += !similar(image[i][j], image[i-1][j]);
        if (j) dif += !similar(image[i][j], image[i][j-1]);
        grn += isgreen(image[i][j]);
    }

    int diff = (ld)dif / (H * W) * 100;
    int green = (ld)grn / (H * W) * 100;

    /*cout << "                       diff:\t" << diff << ",    green:\t" << green << endl;*/
    if (green >= 7 && green > diff) return 2;

    if (diff >= 11) return 3;
    if (diff >= 2 && green <= 7) return 1;
    if (green >= 15) return 2;
    return 4;
    return -1;
}

Compilation message (stderr)

artclass.cpp: In function 'VPI harevan(int, int)':
artclass.cpp:60:14: warning: unused variable 'a' [-Wunused-variable]
   60 |     VVPIXEL& a = image;
      |              ^

• Subtask 1: 93 / 100