제출 #1001090

#제출 시각아이디문제언어결과실행 시간메모리
1001090OtalpRope (JOI17_rope)C++17
80 / 100
2554 ms249172 KiB
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define ff first
#define ss second
#define pb push_back
#define h(a, b) (ll)a * 1e7 + b
 
unordered_map<ll, int> dp[2];
int cnt[1000001];
int a[1000001];
vector<int> d[1000001];
pii g[1000001];

bool cmp(int a, int b){
    if(cnt[a] == cnt[b]) return a > b;
    return cnt[a] > cnt[b];
}

//ll h(ll a, ll b){ //hynya
//    return a * 1e7 + b;
//}
 
void solve(){
    int n, m;
    cin>>n>>m;
    for(int i=1; i<=n; i++){
        cin>>a[i];
        cnt[a[i]] ++;
    }
    for(int i=1; i<=m; i++){
        g[i] = {cnt[i], i};
    }
    sort(g + 1, g + 1 + m, greater<pii>());
 
    for(int i=1; i+1<=n; i+=2){
        int l=a[i], r=a[i + 1];
        dp[1][h(l, r)] ++;
        dp[1][h(r, l)] ++;
        d[l].pb(r);
        d[r].pb(l);
    }
    for(int i=2; i+1<=n; i+=2){
        int l=a[i], r=a[i + 1];
        dp[0][h(l, r)] ++;
        dp[0][h(r, l)] ++;
        d[l].pb(r);
        d[r].pb(l);
    }
    ll dd = 0;
    for(int i=1; i<=m; i++) dd += d[i].size();
    if(dd > 2e6) return;
    if(dp[0].size() + dp[1].size() > 2e6) return;
    for(int i=1; i<=m; i++){
        d[i].pb(i);
        sort(d[i].begin(), d[i].end(), cmp);
    }
    for(int i=1; i<=m; i++){
        int ans = n - cnt[i];
        int ls = 1;
        for(int j: d[i]){
            while(ls <= m and g[ls].ss == j) ls++;
            if(j == i) continue;
            for(int k=0; k<2; k++){ 
                ans = min(ans, n-cnt[i]-cnt[j]+dp[k][h(i, j)]);
            }
        }
        if(ls <= m) ans = min(ans, n-cnt[i]-g[ls].ff);
        cout<<ans<<'\n';
    }
}


signed main(){
    ios_base::sync_with_stdio(NULL), cin.tie(NULL), cout.tie(NULL);
    solve();
}






















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