oj.uz

답안 #920784

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
920784 2024-02-03T03:23:05 Z bachhoangxuan 방벽 (JOI15_walls) C++17
100 / 100
 343 ms 33092 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=1000005;
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;

int N,M,res[maxn];
vector<piii> qq;
int P[maxn];

namespace List{
    int pre[maxn],nxt[maxn];
    void init(int n){
        for(int i=0;i<=n;i++){
            nxt[i]=i+1;
            pre[i+1]=i;
        }
    }
};

void solve(){
    cin >> N >> M;
    for(int i=1;i<=N;i++){
        int a,b;cin >> a >> b;
        qq.push_back({b-a,{a,i}});
    }
    sort(qq.begin(),qq.end());

    int n=0;
    for(int i=1;i<=M;i++){
        int x;cin >> x;
        if(x==P[n] && n) continue;
        else if(n<=1 || (P[n-1]<P[n] && P[n]>x) || (P[n-1]>P[n] && P[n]<x)) P[++n]=x;
        else P[n]=x;
    }

    if(n==1){
        for(auto [sz,x]:qq){
            int l=x.fi,r=x.fi+sz,id=x.se;
            if(l<=P[n] && P[n]<=r) res[id]=0;
            else if(r<P[n]) res[id]=P[n]-r;
            else res[id]=l-P[n];
        }
        for(int i=1;i<=N;i++) cout << res[i] << '\n';
        return;
    }

    //cout << "array\n";
    //for(int i=1;i<=n;i++) cout << P[i] << ' ';
    //cout << '\n';

    List::init(n);
    set<pii> ss;
    int sum=0,cnt=0;
    for(int i=1;i<n;i++){
        ss.insert({abs(P[i+1]-P[i]),i+1});
        sum+=abs(P[i]-P[i+1]);
        cnt++;
    }
    function<void(int)> del = [&](int x){
        //cout << "del " << x << '\n';
        int l=List::pre[x],r=List::nxt[x];
        int nl=List::pre[l];
        //cout << "del " << nl << ' ' << l << ' ' << x << ' ' << r << '\n';
        int sz=abs(P[x]-P[l]);
        if(r>n){
            sum-=sz;cnt--;
            ss.erase({sz,x});
            List::nxt[l]=r;
            List::pre[r]=l;
        }
        else if(!nl){
            sum-=sz;cnt--;
            ss.erase({sz,x});
            List::nxt[nl]=x;
            List::pre[x]=nl;
        }
        else{
            sum-=2*sz;cnt-=2;
            List::nxt[nl]=r;
            List::pre[r]=nl;
            ss.erase({sz,x});
            ss.erase({abs(P[nl]-P[l]),l});
            ss.erase({abs(P[r]-P[x]),r});
            ss.insert({abs(P[r]-P[nl]),r});
        }

    };
    for(auto [sz,x]:qq){
        auto [l,id]=x;
        int r=l+sz;
        //cout << "*" << sz << ' ' << l << ' ' << r  << ' ' << id << '\n';
        while((int)ss.size()>1 && ss.begin()->fi<=sz) del(ss.begin()->se);
        int p=List::nxt[0],c=List::nxt[p];
        if((int)ss.size()<=1 && abs(P[p]-P[c])<=sz){
            if(P[p]>P[c]) swap(p,c);
            if(l<=P[p] && P[c]<=r) res[id]=0;
            else if(r<P[c]) res[id]=P[c]-r;
            else res[id]=l-P[p];
            continue;
        }
        if(P[p]<P[c]) res[id]=abs(l-P[p]);
        else res[id]=abs(P[p]-r);
        res[id]+=sum-cnt*sz;
    }
    for(int i=1;i<=N;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 3 ms 2908 KB Output is correct
2 Correct 119 ms 14160 KB Output is correct
3 Correct 212 ms 19544 KB Output is correct
4 Correct 168 ms 19600 KB Output is correct
5 Correct 215 ms 19596 KB Output is correct
6 Correct 136 ms 19544 KB Output is correct
7 Correct 18 ms 2108 KB Output is correct
8 Correct 19 ms 4440 KB Output is correct

Subtask #2
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 4696 KB Output is correct
2 Correct 144 ms 15468 KB Output is correct
3 Correct 73 ms 15392 KB Output is correct
4 Correct 340 ms 30984 KB Output is correct
5 Correct 209 ms 26840 KB Output is correct
6 Correct 308 ms 31408 KB Output is correct
7 Correct 192 ms 26456 KB Output is correct
8 Correct 335 ms 30984 KB Output is correct
9 Correct 69 ms 12324 KB Output is correct
10 Correct 138 ms 31416 KB Output is correct

Subtask #3
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2908 KB Output is correct
2 Correct 119 ms 14160 KB Output is correct
3 Correct 212 ms 19544 KB Output is correct
4 Correct 168 ms 19600 KB Output is correct
5 Correct 215 ms 19596 KB Output is correct
6 Correct 136 ms 19544 KB Output is correct
7 Correct 18 ms 2108 KB Output is correct
8 Correct 19 ms 4440 KB Output is correct
9 Correct 15 ms 4696 KB Output is correct
10 Correct 144 ms 15468 KB Output is correct
11 Correct 73 ms 15392 KB Output is correct
12 Correct 340 ms 30984 KB Output is correct
13 Correct 209 ms 26840 KB Output is correct
14 Correct 308 ms 31408 KB Output is correct
15 Correct 192 ms 26456 KB Output is correct
16 Correct 335 ms 30984 KB Output is correct
17 Correct 69 ms 12324 KB Output is correct
18 Correct 138 ms 31416 KB Output is correct
19 Correct 196 ms 27348 KB Output is correct
20 Correct 343 ms 33008 KB Output is correct
21 Correct 197 ms 27576 KB Output is correct
22 Correct 248 ms 30884 KB Output is correct
23 Correct 185 ms 28332 KB Output is correct
24 Correct 246 ms 32540 KB Output is correct
25 Correct 74 ms 14780 KB Output is correct
26 Correct 77 ms 16812 KB Output is correct
27 Correct 159 ms 33092 KB Output is correct