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답안 #212409

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
212409 2020-03-22T21:51:57 Z medk 별자리 3 (JOI20_constellation3) C++14
100 / 100
 531 ms 49116 KB 
#include <bits/stdc++.h>

#define ld long double
#define ll long long
#define pb push_back
#define x first
#define y second
#define all(x) x.begin(),x.end()
#define sz(x) (int)(x.size())

using namespace std;

ll n,m;
vector<ll> bX;
vector<vector<ll>>bY;
vector<vector<pair<ll,ll>>> sX,sY;
vector<pair<ll,pair<ll,ll>>> dsu;
vector<ll> sgt,lazy;

ll getp(ll x)
{
    if(x==dsu[x].x) return x;
    return dsu[x].x=getp(dsu[x].x);
}
void connect(ll u, ll v)
{
    u=getp(u), v=getp(v);
    if(dsu[u].y.y-dsu[u].y.x<dsu[v].y.y-dsu[v].y.x) swap(u,v);
    dsu[v].x=u;
    dsu[u].y.x=min(dsu[u].y.x,dsu[v].y.x);
    dsu[u].y.y=max(dsu[u].y.y,dsu[v].y.y);
}

void upd(ll a, ll b, ll val, ll p=1, ll l=0, ll r=n-1)
{
    if(lazy[p])
    {
        sgt[p]+=lazy[p];
        if(l!=r)
        {
            lazy[p*2]+=lazy[p];
            lazy[p*2+1]+=lazy[p];
        }
        lazy[p]=0;
    }
    if(l>=a && r<=b)
    {
        sgt[p]+=val;
        if(l!=r)
        {
            lazy[p*2]+=val;
            lazy[p*2+1]+=val;
        }
        return;
    }
    ll md=(l+r)/2;
    if(l<=b && md>=a) upd(a,b,val,p*2,l,md);
    if(md+1<=b && r>=a) upd(a,b,val,p*2+1,md+1,r);
    sgt[p]=max(sgt[p*2],sgt[p*2+1]);
}

ll getmx(ll a, ll b, ll p=1, ll l=0, ll r=n-1)
{
    if(lazy[p])
    {
        sgt[p]+=lazy[p];
        if(l!=r)
        {
            lazy[p*2]+=lazy[p];
            lazy[p*2+1]+=lazy[p];
        }
        lazy[p]=0;
    }
    if(l>=a && r<=b) return sgt[p];
    ll md=(l+r)/2;
    ll ret=0;
    if(l<=b && md>=a) ret=getmx(a,b,p*2,l,md);
    if(md+1<=b && r>=a) ret=max(ret,getmx(a,b,p*2+1,md+1,r));
    return ret;
}

int main()
{
    ios::sync_with_stdio(0); cin.tie(0);
    cin>>n;
    bY.resize(n+1), sX.resize(n), sY.resize(n+1), sgt.resize(4*n), lazy.resize(4*n);
    for(ll i=0;i<n;i++) dsu.pb({i,{i,i}});
    for(ll i=0;i<n;i++)
    {
        ll Ai; cin>>Ai;
        Ai--;
        bX.pb(Ai);
        bY[Ai].pb(i);
    }
    ll ans=0;
    cin>>m;
    for(ll i=0;i<m;i++)
    {
        ll x,y; ll c; cin>>x>>y>>c;
        x--,y--;
        sX[x].pb({y,c});
        ans+=c;
    }
    for(ll i=0;i<n;i++)
    {
        sort(all(sX[i]));
        ll prev=0;
        for(auto p:sX[i])
        {
            if(p.y<=prev) continue;
            sY[p.x].pb({i,p.y-prev});
            prev=p.y;
        }
    }
    vector<bool> started(n,0);
    for(ll i=0;i<=n;i++)
    {
        for(auto p:sY[i])
            upd(p.x,p.x,p.y);
        for(ll bld:bY[i])
        {
            ll lV=0, rV=0;
            if(bld>0) if(started[bld-1])
            {
                ll par=getp(bld-1);
                ll L=dsu[par].y.x, R=dsu[par].y.y;
                lV=getmx(L,R);
            }
            if(bld<n-1) if(started[bld+1])
            {
                ll par=getp(bld+1);
                ll L=dsu[par].y.x, R=dsu[par].y.y;
                rV=getmx(L,R);
                upd(L,R,lV);
            }
            if(bld>0) if(started[bld-1])
            {
                ll par=getp(bld-1);
                ll L=dsu[par].y.x, R=dsu[par].y.y;
                upd(L,R,rV);
            }
            if(bld>0) if(started[bld-1]) connect(bld,bld-1);
            if(bld<n-1) if(started[bld+1]) connect(bld,bld+1);
            started[bld]=1;
            upd(bld,bld,lV+rV);
        }
    }
    cout<<ans-sgt[1]<<'\n';
    return 0;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 6 ms 512 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 6 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 6 ms 512 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 6 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 7 ms 768 KB Output is correct
24 Correct 7 ms 768 KB Output is correct
25 Correct 7 ms 768 KB Output is correct
26 Correct 7 ms 768 KB Output is correct
27 Correct 7 ms 768 KB Output is correct
28 Correct 7 ms 816 KB Output is correct
29 Correct 7 ms 768 KB Output is correct
30 Correct 7 ms 768 KB Output is correct
31 Correct 7 ms 768 KB Output is correct
32 Correct 7 ms 768 KB Output is correct
33 Correct 7 ms 896 KB Output is correct
34 Correct 7 ms 768 KB Output is correct
35 Correct 7 ms 768 KB Output is correct
36 Correct 7 ms 768 KB Output is correct
37 Correct 7 ms 768 KB Output is correct
38 Correct 7 ms 896 KB Output is correct
39 Correct 7 ms 768 KB Output is correct
40 Correct 9 ms 768 KB Output is correct
41 Correct 7 ms 768 KB Output is correct
42 Correct 7 ms 768 KB Output is correct
43 Correct 8 ms 768 KB Output is correct
44 Correct 8 ms 768 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 6 ms 512 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 6 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 7 ms 768 KB Output is correct
24 Correct 7 ms 768 KB Output is correct
25 Correct 7 ms 768 KB Output is correct
26 Correct 7 ms 768 KB Output is correct
27 Correct 7 ms 768 KB Output is correct
28 Correct 7 ms 816 KB Output is correct
29 Correct 7 ms 768 KB Output is correct
30 Correct 7 ms 768 KB Output is correct
31 Correct 7 ms 768 KB Output is correct
32 Correct 7 ms 768 KB Output is correct
33 Correct 7 ms 896 KB Output is correct
34 Correct 7 ms 768 KB Output is correct
35 Correct 7 ms 768 KB Output is correct
36 Correct 7 ms 768 KB Output is correct
37 Correct 7 ms 768 KB Output is correct
38 Correct 7 ms 896 KB Output is correct
39 Correct 7 ms 768 KB Output is correct
40 Correct 9 ms 768 KB Output is correct
41 Correct 7 ms 768 KB Output is correct
42 Correct 7 ms 768 KB Output is correct
43 Correct 8 ms 768 KB Output is correct
44 Correct 8 ms 768 KB Output is correct
45 Correct 520 ms 46652 KB Output is correct
46 Correct 515 ms 46048 KB Output is correct
47 Correct 498 ms 45532 KB Output is correct
48 Correct 509 ms 46532 KB Output is correct
49 Correct 503 ms 45148 KB Output is correct
50 Correct 484 ms 45152 KB Output is correct
51 Correct 531 ms 45532 KB Output is correct
52 Correct 523 ms 46304 KB Output is correct
53 Correct 514 ms 46044 KB Output is correct
54 Correct 458 ms 48900 KB Output is correct
55 Correct 420 ms 47964 KB Output is correct
56 Correct 424 ms 47452 KB Output is correct
57 Correct 404 ms 46940 KB Output is correct
58 Correct 399 ms 43100 KB Output is correct
59 Correct 382 ms 42972 KB Output is correct
60 Correct 301 ms 49116 KB Output is correct
61 Correct 346 ms 44892 KB Output is correct
62 Correct 450 ms 46432 KB Output is correct
63 Correct 331 ms 45148 KB Output is correct
64 Correct 363 ms 43868 KB Output is correct
65 Correct 443 ms 46556 KB Output is correct
66 Correct 344 ms 44124 KB Output is correct