Submission #931883

#	Time	Username	Problem	Language	Result	Execution time	Memory
931883		alextodoran	Council (JOI23_council)	C++17	0 / 100	1 ms	2396 KiB

council

/**
 _  _   __  _ _ _  _  _ _
 |a  ||t  ||o    d | |o  |
| __    _| | _ | __|  _ |
| __ |/_  | __  /__\ / _\|

**/

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N_MAX = 300000;
const int M_MAX = 20;

int N, M;
bool vote[N_MAX][M_MAX];
int total[M_MAX];

int dp[1 << M_MAX];

int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    cin >> N >> M;
    for (int i = 0; i < N; i++) {
        int mask = 0;
        for (int j = 0; j < M; j++) {
            cin >> vote[i][j];
            mask ^= (!vote[i][j] << j);
            total[j] += vote[i][j];
        }
        int sub = mask;
        while (true) {
            dp[sub] = 1;
            sub--;
            if (sub < 0) {
                break;
            }
            sub &= mask;
        }
    }
    for (int mask = 0; mask < (1 << M); mask++) {
        dp[mask] = __builtin_popcount(mask);
    }
    for (int j = 0; j < M; j++) {
        int bit = (1 << j);
        for (int mask = bit; mask < (1 << M); mask = ((mask + 1) | bit)) {
            dp[mask] = max(dp[mask], dp[mask ^ bit]);
        }
    }
    for (int i = 0; i < N; i++) {
        int cnt_ok = 0;
        int mask_bonus = 0;
        for (int j = 0; j < M; j++) {
            if ((total[j] - vote[i][j] - 1) * 2 > N - 2) {
                cnt_ok++;
            } else if ((total[j] - vote[i][j] - 0) * 2 > N - 2) {
                mask_bonus ^= (1 << j);
            }
        }
        cout << cnt_ok + dp[mask_bonus] << "\n";
    }

    return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 8
• Subtask 3: 0 / 6
• Subtask 4: 0 / 19
• Subtask 5: 0 / 15
• Subtask 6: 0 / 22
• Subtask 7: 0 / 22