Submission #889588

#	Time	Username	Problem	Language	Result	Execution time	Memory
889588		vjudge1	Council (JOI23_council)	C++17	41 / 100	4080 ms	45080 KiB

council

#include <bits/stdc++.h>

using namespace std;

#define all(x) x.begin(), x.end()
#define ar array
#define pb push_back
#define ln '\n'
#define int long long

using i64 = long long;

template <class F, class _S>
bool chmin(F &u, const _S &v){
    bool flag = false;
    if ( u > v ){
        u = v; flag |= true;
    }
    return flag;
}

template <class F, class _S>
bool chmax(F &u, const _S &v){
    bool flag = false;
    if ( u < v ){
        u = v; flag |= true;
    }
    return flag;
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, m; cin >> n >> m;
    vector <vector<int>> a(n, vector <int> (m));
    for ( auto &u: a ){
        for ( auto &v: u ) cin >> v;
    }
    vector <int> cnt(m);
    for ( int i = 0; i < n; i++ ){
        for ( int j = 0; j < m; j++ ){
            cnt[j] += a[i][j];
        }
    }
    int tot = 0;
    for ( auto &x: cnt ){
        tot += (x >= n / 2);
    }
    const int S = 1 << m;
    vector <ar<int,2>> us(S, {-1, -1});
    for ( int i = 0; i < n; i++ ){
        int b = 0;
        for ( int j = 0; j < m; j++ ){
            b |= a[i][j] << j;
        }
        if ( us[b][0] != -1 ){
            swap(us[b][0], us[b][1]);
        }
        us[b][0] = i;
    }
    if ( m <= 10 ){
        for ( int i = 0; i < n; i++ ){
            int mx = 0, q = tot;
            auto tmp = cnt;
            int b = 0;
            for ( int j = 0; j < m; j++ ){
                if ( a[i][j] && tmp[j] == n / 2 ){
                    --q;
                } tmp[j] -= a[i][j];
                if ( tmp[j] == n / 2 ){
                    b |= 1 << j;
                }
            }
            for ( int mask = 0; mask < (1 << m); mask++ ){
                bool flag = false;
                for ( auto j: {0, 1} ){
                    if ( us[mask][j] != -1 && us[mask][j] != i ){
                        flag = true;
                    }
                }
                chmax(mx, flag * (q - __builtin_popcount(mask & b)));
            }
            cout << mx << ln;
        }
    } else{
        for ( int i = 0; i < n; i++ ){
            int mx = 0, q = tot;
            auto tmp = cnt;
            for ( int j = 0; j < m; j++ ){
                if ( a[i][j] && cnt[j] == n / 2 ){
                    --q;
                } cnt[j] -= a[i][j];
            }
            for ( int j = 0; j < n; j++ ){
                if ( j == i ) continue;
                int tq = q;
                for ( int k = 0; k < m; k++ ){
                    if ( a[j][k] && cnt[k] == n / 2 ){
                        --tq;
                    }
                }
                chmax(mx, tq);
            }
            cout << mx << ln;
            swap(tmp, cnt);
        }
    }

    cout << '\n';
}

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