oj.uz

답안 #404562

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
404562 2021-05-14T15:40:20 Z balbit 늑대인간 (IOI18_werewolf) C++14
100 / 100
 722 ms 96348 KB 
#include <bits/stdc++.h>
#include "werewolf.h"
using namespace std;
#define ll long long
#define y1 zck_is_king
#define pii pair<int, int>
#define ull unsigned ll
#define f first
#define s second
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)x.size()
#define SQ(x) (x)*(x)
#define MN(a,b) a = min(a,(__typeof__(a))(b))
#define MX(a,b) a = max(a,(__typeof__(a))(b))
#define pb push_back
#define REP(i,n) for (int i = 0; i<n; ++i)
#define RREP(i,n) for (int i = n-1; i>=0; --i)
#define REP1(i,n) for (int i = 1; i<=n; ++i)
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#ifdef BALBIT
#define IOS()
#define bug(...) cout<<__LINE__<<": "<<#__VA_ARGS__<<"- ",_do(__VA_ARGS__);
template<typename T> void _do(T &&x){cout<<x<<endl;}
template<typename T, typename ...S> void _do(T &&x, S &&...y){cout<<x<<", ";_do(y...);}
#else
#define IOS() ios_base::sync_with_stdio(0);cin.tie(0);
#define endl '\n'
#define bug(...)
#endif

const int iinf = 1e9+10;
const ll inf = 1ll<<60;
const ll mod = 1e9+7 ;


void GG(){cout<<"0\n"; exit(0);}

ll mpow(ll a, ll n, ll mo = mod){ // a^n % mod
    ll re=1;
    while (n>0){
        if (n&1) re = re*a %mo;
        a = a*a %mo;
        n>>=1;
    }
    return re;
}

ll inv (ll b, ll mo = mod){
    if (b==1) return b;
    return (mo-mo/b) * inv(mo%b,mo) % mo;
}

const int maxn = 2e5+5;

int n;
vector<int> g[maxn];
struct dsu{
    int par[maxn], sz[maxn];
//    vector<int> tree[maxn];
    vector<vector<int> > tree;
    int L[maxn], R[maxn];
    vector<int> ord;
    int IT;
    int find(int x) {return x == par[x]? x : par[x] =  find(par[x]); }
//    int findrng(int x, int l, int r) {
//        if (x == par[x] || par[x] > r || par[x] < l) return x;
//        return findrng(x,l,r);
//    }
    void mrg(int a, int b) { // b is the new parent
        a = find(a); b = find(b);
        if (a == b) return;
//        if (sz[a] > sz[b]) swap(a,b);
        par[a]=b; tree[b].pb(a);
//        sz[b] += sz[a];
    }
//    void buildtree(){
//        REP(i,n) {
//            tree[par[i]].pb(i);
//        }
//    }
    bool seen[maxn];
    void dfs(int v) {
        seen[v] = 1;
        ord.pb(v);
        L[v] = R[v] = IT++;
        for (int u : tree[v]) {
            dfs(u);
            R[v] = R[u];
        }
    }
//    void rundfs() {
//        REP(i,n) {
//            if (!seen[i]) dfs(i);
//        }
//    }
    dsu(){
        tree.resize(n);
        REP(i,maxn) par[i] = i, sz[i] = 1;
        IT = 0;
    }
};
vector<int> ret;
vector<int> rbhere[maxn], lbhere[maxn]; // which queries have respective bounds here
int sub1[maxn], sub2[maxn]; // which subtree do you govern?

int seg[maxn];
void MO(int e, int v) {
    for (++e; e<maxn; e+=e&-e) seg[e] += v;
}
int QU(int e) {
    int re=0;
    for (++e; e>0; e-=e&-e) re += seg[e];
    return re;
}

struct qq{
//    int cnt; // count under this
    int l, r, i, dir;
};
vector<qq> go[maxn];

vector<int> check_validity(int _n, vector<int> mx, vector<int> my, vector<int> S, vector<int> E, vector<int> LB, vector<int> RB) {
    n = _n;
//    return {1,0,0};
//    cout<<"yo"<<endl;
//    return {0,0,0};
//    bug("hi");
    REP(i ,SZ(mx)) {
        g[mx[i]].pb(my[i]);
        g[my[i]].pb(mx[i]);
    }
    int q = SZ(S);
    ret.resize(q);
    REP(i,q) {
        rbhere[RB[i]].pb(i);
        lbhere[LB[i]].pb(i);
    }
    dsu LT, RT;
    // build first tree from left
    REP(i, n) {
        for (int v : g[i]) {
            if ( v<i)
                LT.mrg(v, i); // order matters here! i is the new root
        }
        for (int y : rbhere[i]) {
            sub1[y] = LT.find(E[y]);
        }
    }
//    return {};
    LT.dfs(n-1);
    for (int i = n-1; i>=0; --i) {
        for (int v : g[i]) {
            if (v > i)
                RT.mrg(v,i);
        }
        for (int y : lbhere[i]) {
            sub2[y] = RT.find(S[y]);
//            cout<<"tree 2: "<<y<<' '<<S[y]<<' '<<sub2[y]<<endl;
        }
    }
    RT.dfs(0);
//    cout<<"Tree 2: "<<endl;
//    REP(i,n) cout<<RT.ord[i]<<' ';
//    cout<<endl;
//    vector<qq> ev;
    REP(i, q) {

        int lw = LT.L[sub1[i]], rw = LT.R[sub1[i]];
        int qlw = RT.L[sub2[i]], qrw = RT.R[sub2[i]];
        if (lw-1>=0) go[lw-1].pb({qlw, qrw, i, -1});
        go[rw].pb({qlw, qrw, i,  1});
    }
    REP(i, n) {
        int pos = RT.L[LT.ord[i]];
//        cout<<"pos: "<<pos<<' '<<LT.ord[i]<<endl;
        MO(pos, 1);
        for (qq e : go[i]) {
            ret[e.i] += e.dir * (QU(e.r) - QU(e.l-1));
        }
    }
    REP(i, q) {
        ret[i] = min(ret[i], 1);
    }
    return ret;
}

//#undef BALBIT
//signed main(){
//    IOS();
//
//
//}
//#enidf

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 25760 KB Output is correct
2 Correct 16 ms 25744 KB Output is correct
3 Correct 17 ms 25716 KB Output is correct
4 Correct 16 ms 25748 KB Output is correct
5 Correct 20 ms 25732 KB Output is correct
6 Correct 15 ms 25744 KB Output is correct
7 Correct 16 ms 25740 KB Output is correct
8 Correct 16 ms 25744 KB Output is correct
9 Correct 16 ms 25712 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 25760 KB Output is correct
2 Correct 16 ms 25744 KB Output is correct
3 Correct 17 ms 25716 KB Output is correct
4 Correct 16 ms 25748 KB Output is correct
5 Correct 20 ms 25732 KB Output is correct
6 Correct 15 ms 25744 KB Output is correct
7 Correct 16 ms 25740 KB Output is correct
8 Correct 16 ms 25744 KB Output is correct
9 Correct 16 ms 25712 KB Output is correct
10 Correct 22 ms 26672 KB Output is correct
11 Correct 23 ms 26716 KB Output is correct
12 Correct 25 ms 26708 KB Output is correct
13 Correct 23 ms 26856 KB Output is correct
14 Correct 20 ms 26764 KB Output is correct
15 Correct 22 ms 26828 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 681 ms 80428 KB Output is correct
2 Correct 557 ms 89444 KB Output is correct
3 Correct 576 ms 89528 KB Output is correct
4 Correct 542 ms 88440 KB Output is correct
5 Correct 581 ms 88388 KB Output is correct
6 Correct 660 ms 88464 KB Output is correct
7 Correct 523 ms 85560 KB Output is correct
8 Correct 584 ms 91480 KB Output is correct
9 Correct 493 ms 88588 KB Output is correct
10 Correct 503 ms 86224 KB Output is correct
11 Correct 492 ms 87384 KB Output is correct
12 Correct 499 ms 87868 KB Output is correct
13 Correct 619 ms 95236 KB Output is correct
14 Correct 631 ms 95220 KB Output is correct
15 Correct 560 ms 95204 KB Output is correct
16 Correct 592 ms 95256 KB Output is correct
17 Correct 494 ms 85192 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 25760 KB Output is correct
2 Correct 16 ms 25744 KB Output is correct
3 Correct 17 ms 25716 KB Output is correct
4 Correct 16 ms 25748 KB Output is correct
5 Correct 20 ms 25732 KB Output is correct
6 Correct 15 ms 25744 KB Output is correct
7 Correct 16 ms 25740 KB Output is correct
8 Correct 16 ms 25744 KB Output is correct
9 Correct 16 ms 25712 KB Output is correct
10 Correct 22 ms 26672 KB Output is correct
11 Correct 23 ms 26716 KB Output is correct
12 Correct 25 ms 26708 KB Output is correct
13 Correct 23 ms 26856 KB Output is correct
14 Correct 20 ms 26764 KB Output is correct
15 Correct 22 ms 26828 KB Output is correct
16 Correct 681 ms 80428 KB Output is correct
17 Correct 557 ms 89444 KB Output is correct
18 Correct 576 ms 89528 KB Output is correct
19 Correct 542 ms 88440 KB Output is correct
20 Correct 581 ms 88388 KB Output is correct
21 Correct 660 ms 88464 KB Output is correct
22 Correct 523 ms 85560 KB Output is correct
23 Correct 584 ms 91480 KB Output is correct
24 Correct 493 ms 88588 KB Output is correct
25 Correct 503 ms 86224 KB Output is correct
26 Correct 492 ms 87384 KB Output is correct
27 Correct 499 ms 87868 KB Output is correct
28 Correct 619 ms 95236 KB Output is correct
29 Correct 631 ms 95220 KB Output is correct
30 Correct 560 ms 95204 KB Output is correct
31 Correct 592 ms 95256 KB Output is correct
32 Correct 494 ms 85192 KB Output is correct
33 Correct 656 ms 89232 KB Output is correct
34 Correct 308 ms 67832 KB Output is correct
35 Correct 679 ms 91660 KB Output is correct
36 Correct 678 ms 89424 KB Output is correct
37 Correct 722 ms 90768 KB Output is correct
38 Correct 620 ms 89940 KB Output is correct
39 Correct 572 ms 96252 KB Output is correct
40 Correct 618 ms 93876 KB Output is correct
41 Correct 515 ms 89024 KB Output is correct
42 Correct 495 ms 86788 KB Output is correct
43 Correct 665 ms 96348 KB Output is correct
44 Correct 571 ms 90504 KB Output is correct
45 Correct 504 ms 95552 KB Output is correct
46 Correct 550 ms 95344 KB Output is correct
47 Correct 548 ms 95536 KB Output is correct
48 Correct 527 ms 95356 KB Output is correct
49 Correct 515 ms 95412 KB Output is correct
50 Correct 547 ms 95336 KB Output is correct
51 Correct 552 ms 92344 KB Output is correct
52 Correct 559 ms 92440 KB Output is correct