Submission #399322

#	Time	Username	Problem	Language	Result	Execution time	Memory
399322		Collypso	Painting Walls (APIO20_paint)	C++17	12 / 100	1587 ms	20020 KiB

paint

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int) (x).size()
#define print(x) cout << x << endl
#pragma GCC optimize ("O3")
#pragma GCC optimize ("O2")
//#define endl '\n'
//#define int long long

using namespace std;

int subtask1(int N, int M, int K, vt<int> C, vt<int> A, vt<vt<int>> B)
{
    map<int, int> MP;
    for(int i = 0; i < M; i++)
    {
        for(int x : B[i])
        {
            MP[x] = i + 1;
        }
    }

    int i, j, ans;
    i = j = ans = 0;

    while(i <= N - M)
    {
        if (MP[C[i]] == 0) return -1;

        j = i + 1;
        while(j < N)
        {
            if (MP[C[j]] - 1 != MP[C[j - 1]] % M) break;
            j++;
        }
        j--;

        if (j - i + 1 < M) return -1;
        ans += (j - i + M) / M;
        i = j + 1;
    }

    if (i != N) return -1;
    return ans;
}

int minimumInstructions(int N, int M, int K, vt<int> C, vt<int> A, vt<vt<int>> B)
{
    map<int, int> MP;
    bool sub1 = 1;
    for(int i = 0; i < M; i++)
    {
        for(int x : B[i])
        {
            if (MP[x])
            {
                sub1 = 0;
                break;
            }
            MP[x] = 1;
        }
    }
    if (sub1) return subtask1(N, M, K, C, A, B);

    vt<int> dp(N);

    int i = 0;
    while(i <= N - M)
    {
        if (i > 0 && !dp[i - 1]) continue;
        for(int master = 0; master < M; master++)
        {
            int m = master;
            int j = i;
            while(j < N)
            {
                int tmp = lower_bound(all(B[m]), C[j]) - B[m].begin();
                if (B[m][tmp] != C[j]) break;
                m = (m + 1) % M;
                j++;
            }
            if (j - i + 1 < M) continue;
            int tmp = i > 0 ? dp[i - 1] : 0;
            dp[j] = !dp[j] ? (i + j + m) / M + tmp : min(dp[j], (i + j + m) / M + tmp);
        }
        i++;
    }

    if (dp[N - 1]) return dp[N - 1];
    return -1;
}

/**
main()
{
	ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int ans = minimumInstructions(6, 4, 4, {2, 1, 0, 3, 2, 1}, {3}, {{2}, {1}, {0}, {3}});
    print(ans);
}
/**/

Compilation message (stderr)

paint.cpp:104:1: warning: "/*" within comment [-Wcomment]
  104 | /**/
      |

• Subtask 1: 12 / 12
• Subtask 2: 0 / 15
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 37