oj.uz

답안 #909591

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
909591 2024-01-17T09:35:32 Z bachhoangxuan 도로 건설 사업 (JOI13_construction) C++17
100 / 100
 2738 ms 114748 KB 
// Judges with GCC >= 12 only needs Ofast
// #pragma GCC optimize("O3,no-stack-protector,fast-math,unroll-loops,tree-vectorize")
// MLE optimization
// #pragma GCC optimize("conserve-stack")
// Old judges
// #pragma GCC target("sse4.2,popcnt,lzcnt,abm,mmx,fma,bmi,bmi2")
// New judges. Test with assert(__builtin_cpu_supports("avx2"));
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
// Atcoder
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma")
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
- insert(x),erase(x)
- find_by_order(k): return iterator to the k-th smallest element
- order_of_key(x): the number of elements that are strictly smaller
*/

#include<bits/stdc++.h>
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_real_distribution<> pp(0.0,1.0);
#define int long long
#define ld long double
#define pii pair<int,int>
#define piii pair<int,pii>
#define mpp make_pair
#define fi first
#define se second
const int inf=1e18;
const int mod=998244353;
const int maxn=200005;
const int bl=650;
const int maxs=655;
const int maxm=200005;
const int maxq=500005;
const int maxl=25;
const int maxa=1000000;
const int root=3;
int power(int a,int n){
    int res=1;
    while(n){
        if(n&1) res=res*a%mod;
        a=a*a%mod;n>>=1;
    }
    return res;
}
const int iroot=power(3,mod-2);
const int base=131;

vector<piii> e;

struct Rec{
    int x,y,u,v;
}rec[maxn];
int X[maxn],Y[maxn];
int n,m,q;

void build(){
    map<int,vector<pii>> mp;
    for(int i=1;i<=n;i++) mp[X[i]].push_back({Y[i],i});
    for(int i=1;i<=m;i++){
        mp[rec[i].x].push_back({rec[i].y,0});
        mp[rec[i].u+1].push_back({rec[i].y,-1});
    }
    multiset<int> s;
    for(auto &it:mp){
        vector<pii> cc;
        for(auto [p,id]:it.se){
            if(id==0) s.insert(p);
            else if(id==-1) s.erase(s.find(p));
            else cc.push_back({p,id});
        }
        sort(cc.begin(),cc.end());
        for(int i=0;i<(int)cc.size()-1;i++){
            int x=cc[i].fi;
            auto it=s.lower_bound(x);
            if(it==s.end() || cc[i+1].fi<*it){
                e.push_back({cc[i+1].fi-cc[i].fi,{cc[i].se,cc[i+1].se}});
            }
        }
    }
}

int par[maxn];
int findpar(int u){
    if(u!=par[u]) return par[u]=findpar(par[u]);
    return u;
}
bool unions(int u,int v){
    u=findpar(u);v=findpar(v);
    if(u==v) return false;
    return par[v]=u,true;
}

vector<pii> qq[maxn];
int val[maxn],res[maxq];

struct line{
    int a,b,p;
    bool operator<(line l){return a>l.a;}
    bool operator<(int k){return p<k;}
};
struct cvht{
    vector<line> x;
    int div(int a,int b){
        return a/b-((a^b)<0 && a%b);
    }
    bool isect(line &l,line y){
        if(l.a==y.a) l.p=(l.b<y.b)?inf:-inf;
        else l.p=div(y.b-l.b,l.a-y.a);
        return l.p>=y.p;
    }
    void add(line l){
        if(!x.empty()) isect(x.back(),l);
        while((int)x.size()>=2 && x[(int)x.size()-2].p>=x.back().p){
            x.pop_back();
            isect(x.back(),l);
        }
        x.push_back(l);
    }
    int query(int v){
        if(x.empty()) return -1;
        auto l=*lower_bound(x.begin(),x.end(),v);
        return l.a*v+l.b;
    }
}cht;

void solve(){
    cin >> n >> m >> q;
    for(int i=1;i<=n;i++) cin >> X[i] >> Y[i],par[i]=i;
    for(int i=1;i<=m;i++) cin >> rec[i].x >> rec[i].y >> rec[i].u >> rec[i].v;
    build();
    for(int i=1;i<=n;i++) swap(X[i],Y[i]);
    for(int i=1;i<=m;i++) swap(rec[i].x,rec[i].y),swap(rec[i].u,rec[i].v);
    build();

    sort(e.begin(),e.end());
    vector<int> d;
    for(auto [w,x]:e) if(unions(x.fi,x.se)) d.push_back(w);
    memset(val,-1,sizeof(val));
    val[n]=0;
    int sum=0;
    for(int i=0;i<(int)d.size();i++){
        sum+=d[i];
        val[n-i-1]=sum;
    }

    for(int i=1;i<=q;i++){
        int h,b;cin >> b >> h;
        qq[h].push_back({b,i});
    }
    for(int i=1;i<=n;i++){
        if(val[i]!=-1) cht.add({-i,val[i],inf});
        for(auto [x,id]:qq[i]) res[id]=cht.query(-x);
    }
    for(int i=1;i<=q;i++) cout << res[i] << '\n';
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    int test=1;//cin >> test;
    while(test--) solve();
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 16216 KB Output is correct
2 Correct 242 ms 33108 KB Output is correct
3 Correct 256 ms 34500 KB Output is correct
4 Correct 150 ms 32944 KB Output is correct
5 Correct 263 ms 45280 KB Output is correct
6 Correct 259 ms 36200 KB Output is correct
7 Correct 73 ms 30324 KB Output is correct
8 Correct 328 ms 42296 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 16216 KB Output is correct
2 Correct 242 ms 33108 KB Output is correct
3 Correct 256 ms 34500 KB Output is correct
4 Correct 150 ms 32944 KB Output is correct
5 Correct 263 ms 45280 KB Output is correct
6 Correct 259 ms 36200 KB Output is correct
7 Correct 73 ms 30324 KB Output is correct
8 Correct 328 ms 42296 KB Output is correct
9 Correct 1985 ms 77140 KB Output is correct
10 Correct 1854 ms 77024 KB Output is correct
11 Correct 1938 ms 77308 KB Output is correct
12 Correct 1963 ms 77144 KB Output is correct
13 Correct 325 ms 33708 KB Output is correct
14 Correct 246 ms 48432 KB Output is correct
15 Correct 2045 ms 88724 KB Output is correct
16 Correct 205 ms 54152 KB Output is correct
17 Correct 184 ms 53172 KB Output is correct
18 Correct 1022 ms 96780 KB Output is correct

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 16216 KB Output is correct
2 Correct 242 ms 33108 KB Output is correct
3 Correct 256 ms 34500 KB Output is correct
4 Correct 150 ms 32944 KB Output is correct
5 Correct 263 ms 45280 KB Output is correct
6 Correct 259 ms 36200 KB Output is correct
7 Correct 73 ms 30324 KB Output is correct
8 Correct 328 ms 42296 KB Output is correct
9 Correct 414 ms 53060 KB Output is correct
10 Correct 510 ms 51332 KB Output is correct
11 Correct 515 ms 40584 KB Output is correct
12 Correct 337 ms 46872 KB Output is correct
13 Correct 577 ms 38200 KB Output is correct
14 Correct 579 ms 47404 KB Output is correct
15 Correct 415 ms 52832 KB Output is correct
16 Correct 396 ms 52704 KB Output is correct
17 Correct 271 ms 46956 KB Output is correct
18 Correct 599 ms 49376 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 16216 KB Output is correct
2 Correct 242 ms 33108 KB Output is correct
3 Correct 256 ms 34500 KB Output is correct
4 Correct 150 ms 32944 KB Output is correct
5 Correct 263 ms 45280 KB Output is correct
6 Correct 259 ms 36200 KB Output is correct
7 Correct 73 ms 30324 KB Output is correct
8 Correct 328 ms 42296 KB Output is correct
9 Correct 1985 ms 77140 KB Output is correct
10 Correct 1854 ms 77024 KB Output is correct
11 Correct 1938 ms 77308 KB Output is correct
12 Correct 1963 ms 77144 KB Output is correct
13 Correct 325 ms 33708 KB Output is correct
14 Correct 246 ms 48432 KB Output is correct
15 Correct 2045 ms 88724 KB Output is correct
16 Correct 205 ms 54152 KB Output is correct
17 Correct 184 ms 53172 KB Output is correct
18 Correct 1022 ms 96780 KB Output is correct
19 Correct 414 ms 53060 KB Output is correct
20 Correct 510 ms 51332 KB Output is correct
21 Correct 515 ms 40584 KB Output is correct
22 Correct 337 ms 46872 KB Output is correct
23 Correct 577 ms 38200 KB Output is correct
24 Correct 579 ms 47404 KB Output is correct
25 Correct 415 ms 52832 KB Output is correct
26 Correct 396 ms 52704 KB Output is correct
27 Correct 271 ms 46956 KB Output is correct
28 Correct 599 ms 49376 KB Output is correct
29 Correct 1995 ms 114748 KB Output is correct
30 Correct 1166 ms 70912 KB Output is correct
31 Correct 2033 ms 100328 KB Output is correct
32 Correct 505 ms 44720 KB Output is correct
33 Correct 2074 ms 100696 KB Output is correct
34 Correct 525 ms 46792 KB Output is correct
35 Correct 2738 ms 108884 KB Output is correct
36 Correct 2232 ms 112812 KB Output is correct
37 Correct 426 ms 67484 KB Output is correct
38 Correct 1602 ms 108276 KB Output is correct
39 Correct 793 ms 61012 KB Output is correct