Submission #1184306

#	Time	Username	Problem	Language	Result	Execution time	Memory
1184306		Gray	Council (JOI23_council)	C++20	100 / 100	2755 ms	545364 KiB

council

// #pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define ll int
#define ull unsigned long long
#define ld long double
#define ff first
#define ss second
#define ln "\n"
#define mp make_pair
#define pb push_back
#define INF (ll)2e18
#define MOD (ll)(1e9+7)

void solve(){
    ll n, m; cin >> n >> m;
    vector<vector<pair<ll, ll>>> gr(1<<m);

    for (ll i=0; i<(1<<m); i++){
        for (ll j=0; j<m; j++){
            if (i&(1<<j)){
                gr[i].push_back({i^(1<<j), 1});
            }else{
                gr[i].push_back({i^(1<<j), 0});
            }
        }
    }
    vector<ll> vals(n);
    vector<vector<pair<ll, ll>>> cost(1<<m, vector<pair<ll, ll>>(2, {INF, -1}));
    queue<pair<ll, ll>> costcur, costnext;
    for (ll i=0; i<n; i++){
        ll res=0; for (ll j=0; j<m; j++){
            ll x; cin >> x;
            if (x) res+=(1<<j);
        }
        vals[i]=res;
        costcur.push({res, i});
    }
    for (ll w=0; w<(1<<(m+1)); w++){
        while (!costcur.empty()){
            ll u, cf; tie(u, cf)=costcur.front();
            costcur.pop();
            if (cost[u][0].ff==INF){
                cost[u][0] = {w, cf};
            }else if (cost[u][1].ff==INF and cf!=cost[u][0].ss){
                cost[u][1] = {w, cf};
            }else continue;
            for (auto [v, c]:gr[u]){
                if (cost[v][0].ff==INF) {
                    if (w+c==w) costcur.push({v, cf});
                    else costnext.push({v, cf});
                }else if (cost[v][1].ff==INF and cost[v][0].ss!=cf){
                    if (w+c==w) costcur.push({v, cf});
                    else costnext.push({v, cf});
                }
            }
        }
        swap(costcur, costnext);
    }
    vector<ll> cnt(m);
    for (ll i=0; i<n; i++) for (ll j=0; j<m; j++) if (vals[i]&(1<<j)) cnt[j]++;

    for (ll i=0; i<n; i++){
        for (ll j=0; j<m; j++){
            if (vals[i]&(1<<j)) cnt[j]--;
        }
        ll res=0, find=0;
        for (ll j=0; j<m; j++){
            if (cnt[j]>n/2){
                res++; find+=(1<<j);
            }else if (cnt[j]<n/2){
                find+=(1<<j);
            }else if (cnt[j]==n/2){
                res++;
            }
        }
        // cout << find << ": ";
        cout << res-(cost[find][0].ss==i?cost[find][1].ff:cost[find][0].ff) << ln;
        for (ll j=0; j<m; j++){
            if (vals[i]&(1<<j)) cnt[j]++;
        }
    }
}
/*
9-2
101110010001

*/
int main(){
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    #ifdef LOCAL
    auto start = chrono::high_resolution_clock::now();
    #endif
    ll t=1;
    // cin >> t;
    for (ll c=1; c<=t; c++) solve();
    #ifdef LOCAL
    auto duration = chrono::duration_cast<chrono::microseconds>(chrono::high_resolution_clock::now() - start);
    cout << setprecision(0) << fixed << "time: " << (double)duration.count()/1000.0 << " milliseconds" << endl;
    #endif
}

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