oj.uz

Submission #164311

# Submission time Handle Problem Language Result Execution time Memory
164311 2019-11-19T07:31:50 Z qwerty234 Werewolf (IOI18_werewolf) C++14
100 / 100
 1261 ms 141424 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define f first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int> 


using namespace std;


const int N = 4e5 + 123;


struct query {
    int La, Ra, Lb, Rb, id;
} qq[N];


struct qwe{
    int k, id, Lb, Rb;
};

vector <qwe> qe[N];
int n, m, q, S[N], E[N], L[N], R[N], Pmin[N], Pmax[N], p[N], sz[N], val[N];
int rootL[N], rootR[N], tinm[N], toutm[N], tin[N], tout[N], timer = 0, tmn[N], tmx[N];
int t[4 * N], to[N], a1[N];
vector <int> Qmin[N], Qmax[N], g[N], gmin[N], gmax[N];


void make_set() {
	for (int i = 0; i < n; i++) {
		sz[i] = 1;
		val[i] = p[i] = i;
	}
}


int getp(int u) {
    if (u == p[u])
        return u;
    p[u] = getp(p[u]);
    return p[u];
}


void un(int u, int v, bool is =0) {
    u = getp(u);
    v = getp(v);
    if (u == v)
        return;
    if (sz[u] > sz[v])
        swap(u, v);
    p[u] = v;
    sz[v] += sz[u];
    if (is)
        val[v] = max(val[v], val[u]);
    else
        val[v] = min(val[v], val[u]);
}


void dfsmax(int u, int p=-1) {
    tinm[u] = ++timer;
    tmx[timer] = u;
    for (int i = 0; i < gmax[u].size(); i++)
        if (gmax[u][i] != p)
            dfsmax(gmax[u][i], u);
    toutm[u] = timer;
}


void dfsmin(int u, int p=-1) {
    tin[u] = ++timer;
    tmn[timer] = u;
    for (int i = 0; i < gmin[u].size(); i++)
        if (gmin[u][i] != p)
            dfsmin(gmin[u][i], u);
    tout[u] = timer;
}


void build(int v, int tl, int tr) {
    t[v] = 0;
    if (tl == tr)
        return;
    int tm = (tl + tr)>>1;
    build(v * 2, tl, tm);
    build(v * 2 + 1, tm + 1, tr);
}


void upd(int v, int tl, int tr, int pos) {
    if (tl == tr) {
        t[v] = 1;
        return;
    }
    int tm = (tl + tr) / 2;
    if (pos <= tm)
        upd(v * 2, tl, tm, pos);
    else
        upd(v * 2 + 1, tm + 1, tr, pos);
    t[v] = t[v * 2] + t[v * 2 + 1];
}


int get(int v, int tl, int tr, int l, int r) {
    if (r < tl || tr < l)
        return 0;
    int tm = (tl + tr) / 2;
    if (l <= tl && tr <= r)
        return t[v];
    return get(v * 2, tl, tm, l, r) + get(v * 2 + 1, tm + 1, tr, l, r);
}


vector<int> check_validity(int n1, vector<int> X, vector<int> Y, vector<int> S1, vector<int> E1, vector<int> L1, vector<int> R1) {
    n = n1;
    m = X.size();
    q = S1.size();
	for (int i = 0; i < q; i++) {
	    S[i] = S1[i];
	    E[i] = E1[i];
	    L[i] = L1[i];
	    R[i] = R1[i];
    }
	for (int i = 0; i < q; i++) {
		Qmin[L[i]].pb(i);
		Qmax[R[i]].pb(i);
	}
	for (int i = 0; i < m; i++) {
		g[X[i]].pb(Y[i]);
		g[Y[i]].pb(X[i]);
	}	
	make_set();
	for (int i = n - 1; i >= 0; i--) {
	    for (int j = 0; j < g[i].size(); j++) {
	        if (getp(i) == getp(g[i][j]) || g[i][j] < i)
	            continue;
	        Pmin[val[getp(g[i][j])]] = i;
	        un(i, g[i][j]);
	    }
	    for (int j = 0; j < Qmin[i].size(); j++) {
	        int v = getp(S[Qmin[i][j]]);
	        rootL[Qmin[i][j]] = val[v];
	    }
	}
	make_set();
	for (int i = 0; i < n; i++) {
	    for (int j = 0; j < g[i].size(); j++) {
	        if (getp(i) == getp(g[i][j]) || g[i][j] > i)
	            continue;
	        Pmax[val[getp(g[i][j])]] = i;
	        un(i, g[i][j], 1);
	    }
	    for (int j = 0; j < Qmax[i].size(); j++) {
	        int v = getp(E[Qmax[i][j]]);
	        rootR[Qmax[i][j]] = val[v];
	    }
	}
	Pmax[n - 1] = Pmin[0] = -1;
	for (int i = 0; i < n; i++) {
	    if (i != 0) {
    	    gmin[i].pb(Pmin[i]);
	        gmin[Pmin[i]].pb(i);
	    }
	    if (i != n - 1) {
    	    gmax[i].pb(Pmax[i]);
    	    gmax[Pmax[i]].pb(i);
	    }
	}
	timer = 0;
	dfsmin(0);
	timer = 0;
	dfsmax(n - 1);
	for (int i = 1; i <= n; i++)
	    a1[tmx[i]] = i;
	for (int i = 1; i <= n; i++)
	    to[i] = a1[tmn[i]];
	for (int i = 0; i < q; i++) {
	    qq[i].id = i;
	    qq[i].La = tin[rootL[i]];
	    qq[i].Ra = tout[rootL[i]];
	    qq[i].Lb = tinm[rootR[i]];
	    qq[i].Rb = toutm[rootR[i]];
	    qwe tmp;
	    tmp.Lb = qq[i].Lb;
	    tmp.Rb = qq[i].Rb;
	    tmp.k = 1;
	    tmp.id = i;
	    qe[qq[i].Ra].pb(tmp);
	    tmp.Lb = qq[i].Lb;
	    tmp.Rb = qq[i].Rb;
	    tmp.k = -1;
	    tmp.id = i;
	    qe[qq[i].La - 1].pb(tmp);
	}
    vector <int> ans;
    ans.clear();
    for (int i = 0; i < q; i++)
        ans.pb(0);
	build(1, 1, n);
	for (int i = 1; i <= n; i++) {
	    upd(1, 1, n, to[i]);
	    for (int j = 0; j < qe[i].size(); j++) {
	        qwe tmp = qe[i][j];
	        ans[tmp.id] += tmp.k * get(1, 1, n, tmp.Lb, tmp.Rb);
	    }
	}
	for (int i = 0; i < q; i++)
	    if (ans[i] != 0)
	        ans[i] = 1;
	return ans;
}

Compilation message

werewolf.cpp: In function 'void dfsmax(int, int)':
werewolf.cpp:67:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < gmax[u].size(); i++)
                     ~~^~~~~~~~~~~~~~~~
werewolf.cpp: In function 'void dfsmin(int, int)':
werewolf.cpp:77:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < gmin[u].size(); i++)
                     ~~^~~~~~~~~~~~~~~~
werewolf.cpp: In function 'std::vector<int> check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
werewolf.cpp:138:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int j = 0; j < g[i].size(); j++) {
                      ~~^~~~~~~~~~~~~
werewolf.cpp:144:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int j = 0; j < Qmin[i].size(); j++) {
                      ~~^~~~~~~~~~~~~~~~
werewolf.cpp:151:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int j = 0; j < g[i].size(); j++) {
                      ~~^~~~~~~~~~~~~
werewolf.cpp:157:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int j = 0; j < Qmax[i].size(); j++) {
                      ~~^~~~~~~~~~~~~~~~
werewolf.cpp:201:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for (int i = 0; i < q; i++)
     ^~~
werewolf.cpp:203:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  build(1, 1, n);
  ^~~~~
werewolf.cpp:206:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int j = 0; j < qe[i].size(); j++) {
                      ~~^~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 56952 KB Output is correct
2 Correct 58 ms 56824 KB Output is correct
3 Correct 57 ms 56824 KB Output is correct
4 Correct 58 ms 56824 KB Output is correct
5 Correct 58 ms 56952 KB Output is correct
6 Correct 61 ms 56952 KB Output is correct
7 Correct 60 ms 56952 KB Output is correct
8 Correct 61 ms 56964 KB Output is correct
9 Correct 61 ms 56952 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 56952 KB Output is correct
2 Correct 58 ms 56824 KB Output is correct
3 Correct 57 ms 56824 KB Output is correct
4 Correct 58 ms 56824 KB Output is correct
5 Correct 58 ms 56952 KB Output is correct
6 Correct 61 ms 56952 KB Output is correct
7 Correct 60 ms 56952 KB Output is correct
8 Correct 61 ms 56964 KB Output is correct
9 Correct 61 ms 56952 KB Output is correct
10 Correct 69 ms 57972 KB Output is correct
11 Correct 69 ms 58016 KB Output is correct
12 Correct 69 ms 57976 KB Output is correct
13 Correct 68 ms 58232 KB Output is correct
14 Correct 69 ms 58104 KB Output is correct
15 Correct 68 ms 58232 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 1155 ms 131040 KB Output is correct
2 Correct 957 ms 134352 KB Output is correct
3 Correct 952 ms 131292 KB Output is correct
4 Correct 1079 ms 129372 KB Output is correct
5 Correct 1028 ms 130000 KB Output is correct
6 Correct 1083 ms 131156 KB Output is correct
7 Correct 932 ms 127728 KB Output is correct
8 Correct 1020 ms 134380 KB Output is correct
9 Correct 827 ms 129620 KB Output is correct
10 Correct 787 ms 128400 KB Output is correct
11 Correct 832 ms 128720 KB Output is correct
12 Correct 979 ms 128732 KB Output is correct
13 Correct 837 ms 135356 KB Output is correct
14 Correct 819 ms 135388 KB Output is correct
15 Correct 860 ms 135384 KB Output is correct
16 Correct 860 ms 135384 KB Output is correct
17 Correct 944 ms 128052 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 56952 KB Output is correct
2 Correct 58 ms 56824 KB Output is correct
3 Correct 57 ms 56824 KB Output is correct
4 Correct 58 ms 56824 KB Output is correct
5 Correct 58 ms 56952 KB Output is correct
6 Correct 61 ms 56952 KB Output is correct
7 Correct 60 ms 56952 KB Output is correct
8 Correct 61 ms 56964 KB Output is correct
9 Correct 61 ms 56952 KB Output is correct
10 Correct 69 ms 57972 KB Output is correct
11 Correct 69 ms 58016 KB Output is correct
12 Correct 69 ms 57976 KB Output is correct
13 Correct 68 ms 58232 KB Output is correct
14 Correct 69 ms 58104 KB Output is correct
15 Correct 68 ms 58232 KB Output is correct
16 Correct 1155 ms 131040 KB Output is correct
17 Correct 957 ms 134352 KB Output is correct
18 Correct 952 ms 131292 KB Output is correct
19 Correct 1079 ms 129372 KB Output is correct
20 Correct 1028 ms 130000 KB Output is correct
21 Correct 1083 ms 131156 KB Output is correct
22 Correct 932 ms 127728 KB Output is correct
23 Correct 1020 ms 134380 KB Output is correct
24 Correct 827 ms 129620 KB Output is correct
25 Correct 787 ms 128400 KB Output is correct
26 Correct 832 ms 128720 KB Output is correct
27 Correct 979 ms 128732 KB Output is correct
28 Correct 837 ms 135356 KB Output is correct
29 Correct 819 ms 135388 KB Output is correct
30 Correct 860 ms 135384 KB Output is correct
31 Correct 860 ms 135384 KB Output is correct
32 Correct 944 ms 128052 KB Output is correct
33 Correct 1080 ms 132740 KB Output is correct
34 Correct 485 ms 107360 KB Output is correct
35 Correct 1058 ms 135276 KB Output is correct
36 Correct 1100 ms 131844 KB Output is correct
37 Correct 1038 ms 134508 KB Output is correct
38 Correct 1122 ms 132464 KB Output is correct
39 Correct 1051 ms 141424 KB Output is correct
40 Correct 1028 ms 137304 KB Output is correct
41 Correct 1104 ms 132560 KB Output is correct
42 Correct 949 ms 129148 KB Output is correct
43 Correct 1261 ms 139024 KB Output is correct
44 Correct 1053 ms 134060 KB Output is correct
45 Correct 874 ms 138300 KB Output is correct
46 Correct 828 ms 138900 KB Output is correct
47 Correct 849 ms 135732 KB Output is correct
48 Correct 833 ms 135256 KB Output is correct
49 Correct 848 ms 135516 KB Output is correct
50 Correct 842 ms 135384 KB Output is correct
51 Correct 914 ms 135196 KB Output is correct
52 Correct 922 ms 135324 KB Output is correct