Submission #384768

#	Time	Username	Problem	Language	Result	Execution time	Memory
384768		kwongweng	Painting Walls (APIO20_paint)	C++14	12 / 100	67 ms	13164 KiB

paint

#include "paint.h"
#include <bits/stdc++.h>
using namespace std;
typedef vector<int> vi;
typedef long long ll;
#define FOR(i, a, b) for(int i = a; i < b; i++)
#define ROF(i, a, b) for(int i = a; i >= b; i--)

int minimumInstructions(int n, int m, int k, vi c, vi a, vector<vi> b) {
    int ans = 0;
    int num[m]; memset(num, 0, sizeof(num));
    int check[n]; memset(check, 0, sizeof(check));
    vi con[k];
    FOR(i, 0, m){
        FOR(j, 0, a[i]){
            con[b[i][j]].push_back(i);
        }
    }
    FOR(i, 0, m){
        for (int j : con[c[i]]){
            int l = (j-i+m) % m;
            num[l]++;
        }
    }
    int cnt = 0;
    FOR(i, 0, m){
        if (num[i] == m) cnt++;
    }
    if (cnt > 0) check[0] = 1;
    FOR(i, 0, n-m){
        for (int j : con[c[i]]){
            int l = (j-i+m) % m;
            num[l]--;
            if (num[l] == m-1) cnt--;
        }
        for (int j : con[c[i+m]]){
            int l = (j-i+m) % m;
            num[l]++;
            if (num[l] == m) cnt++;
        }
        if (cnt > 0) check[i+1] = 1;
    }
    int r = 0;
    FOR(i, 0, n-m+1){
        if (i < r) continue;
        if (i > r){
            ans = -1;
            break;
        }
        ans++;
        FOR(j, i+1, i+m+1){
            if (check[j] == 1) r = j;
        }
    }
    return ans;
}

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