Submission #362457

#	Time	Username	Problem	Language	Result	Execution time	Memory
362457		mihai145	Vision Program (IOI19_vision)	C++14	0 / 100	46 ms	5024 KiB

vision

#include "vision.h"
#include <vector>

using namespace std;

const int NMAX = 400;
const int CT = 200;

int _H, _W;

int Get_Index(int x, int y)
{
    return x * _H + y;
}

vector <int> diagPlus[NMAX + 5], diagMinus[NMAX + 5];
int resDiagPlus[NMAX + 5], resDiagMinus[NMAX + 5];
int prefPlus[NMAX + 5], sufPlus[NMAX + 5];
int prefMinus[NMAX + 5], sufMinus[NMAX + 5];

void construct_network(int H, int W, int K) {
    _H = H;
    _W = W;

    for(int i = 0; i < H; i++)
        for(int j = 0; j < W; j++) {
            diagPlus[i + j].push_back(Get_Index(i, j));
            diagMinus[i - j + CT].push_back(Get_Index(i, j));
        }

    ///DiagPlus
    for(int i = 0; i <= H + W; i++)
        if((int)diagPlus[i].size() > 0) {
            vector<int>Ns;
            for(auto it : diagPlus[i])
                Ns.push_back(it);
            resDiagPlus[i] = add_or(Ns);
        }

    ///DiagMinus
    for(int i = -W; i <= H; i++)
        if((int)diagMinus[i + CT].size() > 0) {
            vector<int>Ns;
            for(auto it : diagMinus[i + CT])
                Ns.push_back(it);
            resDiagMinus[i + CT] = add_or(Ns);
        }

    ///DiagPlus L->R
    for(int i = 0; i <= H + W; i++)
        if((int)diagPlus[i].size() > 0) {
            ///Prefix OR 0...i
            vector <int> Ns;
            for(int j = 0; j <= i; j++) {
                Ns.push_back(resDiagPlus[j]);
            }
            prefPlus[i] = add_or(Ns);
        }

    ///DiagPlus R->L
    for(int i = H + W - 2; i >= 0; i--) {
        ///Suffix OR i...H+W-2
        vector <int> Ns;
        for(int j = i; j <= H + W - 2; j++) {
            Ns.push_back(resDiagPlus[j]);
        }
        sufPlus[i] = add_or(Ns);
    }

    ///DiagMinus L->R
    for(int i = -W + 1; i <= H - 1; i++) {
        ///Prefix OR -W+1...i
        vector <int> Ns;
        for(int j = -W + 1; j <= i; j++) {
            Ns.push_back(resDiagMinus[j + CT]);
        }
        prefMinus[i + CT] = add_or(Ns);
    }

    ///DiagMinus R->L
    for(int i = H - 1; i >= -W + 1; i--) {
        ///Suffix OR i...H-1
        vector <int> Ns;
        for(int j = i; j <= H - 1; j++) {
            Ns.push_back(resDiagMinus[j + CT]);
        }
        sufMinus[i + CT] = add_or(Ns);
    }

    ///CASE 1: diagPlus is 1 at a distance of K and diagMinus is 1 at a distance of at most K
    ///CODE HERE...
    int res1 = -1;
    vector <int> resAnds;
    for(int i = 0; i <= W + H - 2 - K; i++) {
        vector<int> Ns;
        Ns.push_back(resDiagPlus[i]);
        Ns.push_back(resDiagPlus[i + K]);
        resAnds.push_back(add_and(Ns));
    }
    int isDiagPlusAtDistanceK = add_or(resAnds);

    resAnds.clear();
    for(int l = -W + 1; l <= H - 1 - K; l++) {
        vector <int> Ns;
        if(l - 1 >= -W + 1) {
            Ns.push_back(prefMinus[l - 1 + CT]);
        }
        if(l + K + 1 <= H - 1) {
            Ns.push_back(sufMinus[l + K + 1 + CT]);
        }
        if((int)Ns.size() > 0) {
            int fsp = add_or(Ns);
            resAnds.push_back(add_not(fsp));
        }
    }
    int isDiagMinusAtDistanceAtMostK = add_or(resAnds);

    res1 = add_and({isDiagPlusAtDistanceK, isDiagMinusAtDistanceAtMostK});

    ///CASE 2: diagMinus is 1 at a distance of K and diagPlus is 1 at a distance of at most K
    ///CODE HERE...
    int res2 = -1;
    resAnds.clear();
    for(int i = -W + 1; i <= H - 1 - K; i++) {
        vector<int> Ns;
        Ns.push_back(resDiagMinus[i + CT]);
        Ns.push_back(resDiagMinus[i + K + CT]);
        resAnds.push_back(add_and(Ns));
    }
    int isDiagMinusAtDistanceK = add_or(resAnds);

    resAnds.clear();
    for(int l = 0; l <= H + W - 2 - K; l++) {
        vector <int> Ns;
        if(l - 1 >= 0) {
            Ns.push_back(prefPlus[l - 1]);
        }
        if(l + K + 1 <= H + W - 2) {
            Ns.push_back(sufPlus[l + K + 1]);
        }
        if((int)Ns.size() > 0) {
            int fsp = add_or(Ns);
            resAnds.push_back(add_not(fsp));
        }
    }
    int isDiagPlusAtDistanceAtMostK = add_or(resAnds);

    res2 = add_and({isDiagMinusAtDistanceK, isDiagPlusAtDistanceAtMostK});

    add_or({res1, res2});

    /*
	std::vector<int> Ns;
	Ns = {0, 1};
	int a = add_and(Ns);
	Ns = {0, a};
	int b = add_or(Ns);
	Ns = {0, 1, b};
	int c = add_xor(Ns);
	add_not(c);
    */
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 11
• Subtask 3: 0 / 11
• Subtask 4: 0 / 15
• Subtask 5: 0 / 12
• Subtask 6: 0 / 8
• Subtask 7: 0 / 14
• Subtask 8: 0 / 19