Submission #1159910

#	Time	Username	Problem	Language	Result	Execution time	Memory
1159910		Nurlykhan	Rope (JOI17_rope)	C++20	0 / 100	1 ms	324 KiB

rope

#include <bits/stdc++.h>

using namespace std;

const int N = (int) 1e6 + 10;

int n, m;
int a[N];

int ans[N];

int main() {
    #ifdef local
        freopen("input.txt", "r", stdin);
    #endif // local

    cin >> n >> m;
    if (m == 1) {
        cout << 0;
        return 0;
    }
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
    }
    for (int i = 1; i <= m; i++) {
        ans[i] = N;
    }
    for (int c1 = 1; c1 <= m; c1++) {
        for (int c2 = 1; c2 <= m; c2++) {
            // c1 | c2
            for (int mask = 0; mask < (1 << ((n + 1) / 2)); mask++) {
                int cur = 0;
                for (int i = 0; i < (n + 1) / 2; i++) {
                    int x = 2 * (i + 1), y = 2 * (i + 1) + 1;
                    if ((mask >> i) % 2 == 0) {
                        cur += (a[x] != c1);
                        cur += (y <= n && a[y] != c1);
                    } else {
                        cur += (a[x] != c2);
                        cur += (y <= n && a[y] != c2);
                    }
                }
                ans[c1] = min(ans[c1], cur);
                ans[c2] = min(ans[c2], cur);
            }

            // c1 | c2
            for (int mask = 0; mask < (1 << ((n + 1) / 2)); mask++) {
                int cur = 0;
                for (int i = 0; i < (n + 1) / 2; i++) {
                    int x = 2 * (i + 1), y = 2 * (i + 1) - 1;
                    if ((mask >> i) % 2 == 0) {
                        cur += (x <= n && a[x] != c1);
                        cur += (a[y] != c1);
                    } else {
                        cur += (x <= n && a[x] != c2);
                        cur += (a[y] != c2);
                    }
                }
                ans[c1] = min(ans[c1], cur);
                ans[c2] = min(ans[c2], cur);
            }
        }
    }
    for (int i = 1; i <= m; i++) {
        cout << ans[i] << "\n";
    }

    return 0;
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 30
• Subtask 3: 0 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 20