Submission #1086596

#	Time	Username	Problem	Language	Result	Execution time	Memory
1086596		Bananabread	Council (JOI23_council)	C++17	56 / 100	4053 ms	48468 KiB

council

#include<bits/stdc++.h>
#define ll long long
#define ntr "\n"
#define mod (ll)(1e9+7)
#define taskname "temp"
#define frep freopen("03-05.inp","r",stdin); freopen(taskname".out","w",stdout);
using namespace std;
ll pref[300001];
ll arr[300001][20];
ll ans[300001];
ll cnt[1<<14]={};
ll best[1<<14]={};
ll n,m;
ll one,two,zero;
void sub2(){
    for(int i=1;i<=n;i++){
        for(int j=i+1;j<=n;j++){
            ll cnt=0;
            for(int u=0;u<m;u++){
                ll c=pref[u]-arr[i][u]-arr[j][u];
                if(c>n/2-1) cnt++;
            }
            ans[i]=max(ans[i],cnt);
            ans[j]=max(ans[j],cnt);
        }
    }
    for(int i=1;i<=n;i++){
        cout<<ans[i]<<ntr;
    }
}
int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    //frep;
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        for(int j=0;j<m;j++){
            cin>>arr[i][j];
            pref[j]+=arr[i][j];
        }
    }
    if(n<=3000){
        sub2();
        return 0;
    }
    for(int i=0;i<m;i++){
        if(pref[i]>=n/2+2) two|=(1<<i);
        if(pref[i]==n/2+1) one|=(1<<i);
        if(pref[i]==n/2)  zero|=(1<<i);
    }
    for(int i=1;i<=n;i++){
        ll mask=0;
        for(int j=0;j<m;j++){
            mask+=(arr[i][j]<<j);
        }
        cnt[mask]++;
    }
    for(int m1=0;m1<(1<<m);m1++){
        if(!cnt[m1]) continue;
        cnt[m1]--;
        for(int m2=m1;m2<(1<<m);m2++){
            if(!cnt[m2]) continue;
            ll cnt=(two | (one & ~m1) | ~m2 &(one | zero & ~m1)) ;
            //cout<<m1<<' '<<m2<<ntr;
            //cout<<cnt<<ntr;
            best[m1]=max(best[m1],(ll)__builtin_popcount(cnt));
            best[m2]=max(best[m2],(ll)__builtin_popcount(cnt));
        }
        cnt[m1]++;
    }
    for(int i=1;i<=n;i++){
        ll mask=0;
        for(int j=0;j<m;j++){
            mask+=(arr[i][j]<<j);
        }
        cout<<best[mask]<<ntr;
    }
}

Compilation message (stderr)

council.cpp: In function 'int main()':
council.cpp:62:58: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses]
   62 |             ll cnt=(two | (one & ~m1) | ~m2 &(one | zero & ~m1)) ;
      |                                                     ~~~~~^~~~~
council.cpp:62:45: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses]
   62 |             ll cnt=(two | (one & ~m1) | ~m2 &(one | zero & ~m1)) ;
      |                                         ~~~~^~~~~~~~~~~~~~~~~~~

• 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