Submission #154398

#	Time	Username	Problem	Language	Result	Execution time	Memory
154398		rama_pang	Vision Program (IOI19_vision)	C++14	100 / 100	54 ms	6004 KiB

vision

#include "vision.h"
#include <bits/stdc++.h>
using namespace std;

int solve(int H, int W, int K) {
    vector<int> distX[500], distY[500]; //X = upper left, Y = upper right
    for (int i = 0; i < H; i++) {
        for (int j = 0; j < W; j++) {
            distX[i + j].push_back(i * W + j);
            distY[i + W - j - 1].push_back(i * W + j);
        }
    }
    vector<int> X, Y, allX, allY, exist; //find out if there if distance between the black squares
    for (int i = 0; i < H + W - 1; i++) { //are AT LEAST K
        X.push_back(add_or(distX[i]));
        Y.push_back(add_or(distY[i]));
        allX.push_back(add_or(X));
        allY.push_back(add_or(Y));
        if (i >= K) {
            exist.push_back(add_and({X[i], allX[i - K]}));
            exist.push_back(add_and({Y[i], allY[i - K]}));
        }
    }
    return add_or(exist);
}

void construct_network(int H, int W, int K) {
    if (H + W - 2 == K) solve(H, W, K); //if distance >= K, it is valid if distanc == K -> distance < K + 1
    else add_xor({solve(H, W, K), solve(H, W, K + 1)}); //thus if solve(H, W, K) = true, them solve(H, W, K + 1) = false if the question is valid
}

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