Submission #1014172

#	Time	Username	Problem	Language	Result	Execution time	Memory
1014172		12345678	Council (JOI23_council)	C++17	56 / 100	4051 ms	34588 KiB

council

#include <bits/stdc++.h>

using namespace std;

const int nx=3e5+5, mx=20;

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

int n, m, sm[mx], a[nx][mx], msk[nx], cnt[(1<<mx)+5], res[nx];

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>m;
    for (int i=1; i<=n; i++) for (int j=0; j<m; j++) cin>>a[i][j], sm[j]+=a[i][j], msk[i]+=(1-a[i][j])*(1<<j);
    for (int i=1; i<=n; i++) cnt[msk[i]]++;
    for (int i=1; i<=n; i++)
    {
        cnt[msk[i]]--;
        int vl=0, ans=0;
        for (int j=0; j<m; j++) 
        {
            if (sm[j]-a[i][j]>=(n/2)) ans++;
            if (sm[j]-a[i][j]!=(n/2)) vl+=(1<<j);
        }
        for (int j=0; j<(1<<m); j++) if (cnt[j]) res[i]=max(res[i], ans-(m-__builtin_popcount(j|vl)));
        cnt[msk[i]]++;
    }
    for (int i=1; i<=n;i ++) cout<<res[i]<<'\n';
}

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