Submission #484106

#	Time	Username	Problem	Language	Result	Execution time	Memory
484106		Lam_lai_cuoc_doi	Vision Program (IOI19_vision)	C++17	100 / 100	13 ms	1868 KiB

vision

#include <bits/stdc++.h>
#include "vision.h"

using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;

template <class T>
void read(T &x)
{
    x = 0;
    register int c;
    while ((c = getchar()) && (c > '9' || c < '0'))
        ;
    for (; c >= '0' && c <= '9'; c = getchar())
        x = x * 10 + c - '0';
}

constexpr bool typetest = 0;
constexpr int N = 2e2 + 5;

vector<int> inc[N * 2], decs[N * 2], inchave, decshave;
int pinc[N * 2], pdecs[N * 2];

/// f(x) = 1 if distance between two black point isn't less than x, 0 otherwise

int f(int H, int W, int x)
{
    vector<int> tmp;
    for (int i = x; i <= H + W - 2; ++i)
    {
        tmp.emplace_back(add_and({inchave[i], pinc[i - x]}));
        tmp.emplace_back(add_and({decshave[i], pdecs[i - x]}));
    }
    return add_or(tmp);
}

void construct_network(int H, int W, int K)
{
#define pos(x, y) (W * x + y)

    for (int i = 0; i < H; ++i)
        for (int j = 0; j < W; ++j)
        {
            inc[i + j].emplace_back(pos(i, j));
            decs[i + (W - 1 - j)].emplace_back(pos(i, j));
        }

    for (int i = 0; i <= H + W - 2; ++i)
    {
        inchave.emplace_back(add_or(inc[i]));
        decshave.emplace_back(add_or(decs[i]));
        if (i)
        {
            pinc[i] = add_or({inchave[i], pinc[i - 1]});
            pdecs[i] = add_or({decshave[i], pdecs[i - 1]});
        }
        else
        {
            pinc[i] = inchave[i];
            pdecs[i] = decshave[i];
        }
    }
    // f(k) == 1 and f(k + 1) == 0 => k is answer
    if (K == H + W - 2)
        add_and({f(H, W, K)});
    else
        add_and({f(H, W, K), add_not(f(H, W, K + 1))});
}

/*

void Read()
{
}

void Solve()
{
}

int32_t main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if (fopen("palesta.INP", "r"))
    {
        freopen("paletsa.inp", "r", stdin);
        freopen("palesta.out", "w", stdout);
    }
    int t(1);
    if (typetest)
        cin >> t;
    for (int _ = 1; _ <= t; ++_)
    {
        // cout << "Case #" << _ << ": ";
        Read();
        Solve();
    }
    // cerr << "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";
}

/*
11
-1 4
-4 2
-5 0
0 0
-3 -2
1 -2
5 -2
2 -3
-1 -4
1 -4
3 -4
*/

Compilation message (stderr)

vision.cpp:104:1: warning: "/*" within comment [-Wcomment]
  104 | /*
      |  
vision.cpp: In function 'void read(T&)':
vision.cpp:13:18: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   13 |     register int c;
      |                  ^

• 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