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Submission #787379

# Submission time Handle Problem Language Result Execution time Memory
787379 2023-07-19T06:37:05 Z boyliguanhan Werewolf (IOI18_werewolf) C++17
100 / 100
 1808 ms 272768 KB 
#include "werewolf.h"
#define pb push_back
#define VI vector<int>
#include<bits/stdc++.h>
using namespace std;
#define MXN 400100
struct node{
    int l,r,val,lc,rc;
    node():l(0){}
    node(int l, int r, int val, int lc, int rc):l(l),r(r),val(val),lc(lc),rc(rc){}
    node(int pos):l(pos),r(pos),val(1){}
} t[15*MXN];
int cnt;
int query(int i, int l, int r) {
    if(!t[i].val||t[i].l>r||t[i].r<l)return 0;
    if(l<=t[i].l&&t[i].r<=r) return t[i].val;
    return query(t[i].lc,l,r)+query(t[i].rc,l,r);
}
int mn(int a, int b) {
    t[++cnt] = node(t[a].l,t[b].r,t[a].val+t[b].val,a,b);
    return cnt;
}
int upd(int i, int pos) {
    if(t[i].l==t[i].r) {
        t[++cnt] = node(pos);
        return cnt;
    }
    if(pos<t[t[i].rc].l)
        return mn(upd(t[i].lc,pos),t[i].rc);
    return mn(t[i].lc, upd(t[i].rc, pos));
}
int build(int l, int r){
    if(l==r) return t[++cnt]=node(l,l,0,0,0),cnt;
    return mn(build(l,l+r>>1),build(l+r+2>>1,r));
}
int order[2][MXN], times[4][MXN], cntx, p[MXN], tb[2][20][MXN], cnty;
int abp(int n) {
    return (p[n]==n)?n:(p[n]=abp(p[n]));
}
VI adj[4][MXN];
void dfs1(int n) {
    order[0][times[0][n]=++cntx] = n;
    for(auto i: adj[0][n])
        dfs1(i);
    times[2][n] = cntx;
}
void dfs2(int n) {
    order[1][times[1][n]=++cntx] = n;
    for(auto i: adj[1][n])
        dfs2(i);
    times[3][n] = cntx;
}
VI rt;
VI check_validity(int N,VI X,VI Y,VI s,VI e,VI l,VI r){
    VI ans;     
    for(int i = 0; i < X.size(); i++) {
        if(X[i] < Y[i])
            adj[2][X[i]].pb(Y[i]),
            adj[3][Y[i]].pb(X[i]);
        else
            adj[3][X[i]].pb(Y[i]),
            adj[2][Y[i]].pb(X[i]);
    }
    iota(p, p+MXN, 0);
    for(int i = N; i--;) {
        for(auto j: adj[2][i]) {
            if(abp(j)!=i) {
                adj[0][i].pb(p[j]);
                tb[0][0][p[j]] = i;
                p[p[j]]=i;
            }
        }
    }
    iota(p, p+MXN, 0);
    for(int i = 0; i < N; i++) {
        for(auto j: adj[3][i]) {
            if(abp(j)!=i) {
                adj[1][i].pb(p[j]);
                tb[1][0][p[j]] = i;
                p[p[j]]=i;
            }
        }
    }
    tb[1][0][N-1] = tb[1][0][N] = N;
    for(int i = 1; i < 20; i++)
        for(int j = 0; j < 2*N; j++)
            tb[0][i][j] = tb[0][i-1][tb[0][i-1][j]], tb[1][i][j] = tb[1][i-1][tb[1][i-1][j]];
    dfs1(0);
    cntx=0;
    dfs2(N-1);
    rt.pb(build(1,N));
    for(int i = 1; i <= N; i++) {
        rt.pb(upd(rt.back(), times[1][order[0][i]]));
    }
    for(int i = 0; i < s.size(); i++) {
        int a = s[i], b = e[i], c = l[i], d = r[i];
        for(int i = 20; i--;) {
            if(tb[0][i][a]>=c)
                a = tb[0][i][a];
            if(tb[1][i][b]<=d)
                b = tb[1][i][b];
        }
        int A,B,C,D;
        A = times[0][a];
        B = times[2][a];
        C = times[1][b];
        D = times[3][b];
        ans.pb((bool)(query(rt[B], C, D) - query(rt[A-1],C,D)));
    }
    return ans;
}

Compilation message

werewolf.cpp: In function 'int build(int, int)':
werewolf.cpp:34:24: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   34 |     return mn(build(l,l+r>>1),build(l+r+2>>1,r));
      |                       ~^~
werewolf.cpp:34:40: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   34 |     return mn(build(l,l+r>>1),build(l+r+2>>1,r));
      |                                     ~~~^~
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:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |     for(int i = 0; i < X.size(); i++) {
      |                    ~~^~~~~~~~~~
werewolf.cpp:95:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |     for(int i = 0; i < s.size(); i++) {
      |                    ~~^~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 157208 KB Output is correct
2 Correct 61 ms 157200 KB Output is correct
3 Correct 60 ms 157196 KB Output is correct
4 Correct 57 ms 157140 KB Output is correct
5 Correct 57 ms 157232 KB Output is correct
6 Correct 59 ms 157164 KB Output is correct
7 Correct 65 ms 157164 KB Output is correct
8 Correct 57 ms 157132 KB Output is correct
9 Correct 56 ms 157252 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 157208 KB Output is correct
2 Correct 61 ms 157200 KB Output is correct
3 Correct 60 ms 157196 KB Output is correct
4 Correct 57 ms 157140 KB Output is correct
5 Correct 57 ms 157232 KB Output is correct
6 Correct 59 ms 157164 KB Output is correct
7 Correct 65 ms 157164 KB Output is correct
8 Correct 57 ms 157132 KB Output is correct
9 Correct 56 ms 157252 KB Output is correct
10 Correct 59 ms 158764 KB Output is correct
11 Correct 69 ms 158664 KB Output is correct
12 Correct 57 ms 158660 KB Output is correct
13 Correct 60 ms 158828 KB Output is correct
14 Correct 61 ms 158920 KB Output is correct
15 Correct 59 ms 158824 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 1181 ms 259516 KB Output is correct
2 Correct 1250 ms 263072 KB Output is correct
3 Correct 1117 ms 260632 KB Output is correct
4 Correct 1060 ms 259676 KB Output is correct
5 Correct 1039 ms 259684 KB Output is correct
6 Correct 1087 ms 259672 KB Output is correct
7 Correct 940 ms 259688 KB Output is correct
8 Correct 912 ms 263164 KB Output is correct
9 Correct 633 ms 260648 KB Output is correct
10 Correct 422 ms 259764 KB Output is correct
11 Correct 465 ms 259636 KB Output is correct
12 Correct 531 ms 259576 KB Output is correct
13 Correct 985 ms 272552 KB Output is correct
14 Correct 962 ms 272536 KB Output is correct
15 Correct 1051 ms 272628 KB Output is correct
16 Correct 1046 ms 272536 KB Output is correct
17 Correct 929 ms 259560 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 157208 KB Output is correct
2 Correct 61 ms 157200 KB Output is correct
3 Correct 60 ms 157196 KB Output is correct
4 Correct 57 ms 157140 KB Output is correct
5 Correct 57 ms 157232 KB Output is correct
6 Correct 59 ms 157164 KB Output is correct
7 Correct 65 ms 157164 KB Output is correct
8 Correct 57 ms 157132 KB Output is correct
9 Correct 56 ms 157252 KB Output is correct
10 Correct 59 ms 158764 KB Output is correct
11 Correct 69 ms 158664 KB Output is correct
12 Correct 57 ms 158660 KB Output is correct
13 Correct 60 ms 158828 KB Output is correct
14 Correct 61 ms 158920 KB Output is correct
15 Correct 59 ms 158824 KB Output is correct
16 Correct 1181 ms 259516 KB Output is correct
17 Correct 1250 ms 263072 KB Output is correct
18 Correct 1117 ms 260632 KB Output is correct
19 Correct 1060 ms 259676 KB Output is correct
20 Correct 1039 ms 259684 KB Output is correct
21 Correct 1087 ms 259672 KB Output is correct
22 Correct 940 ms 259688 KB Output is correct
23 Correct 912 ms 263164 KB Output is correct
24 Correct 633 ms 260648 KB Output is correct
25 Correct 422 ms 259764 KB Output is correct
26 Correct 465 ms 259636 KB Output is correct
27 Correct 531 ms 259576 KB Output is correct
28 Correct 985 ms 272552 KB Output is correct
29 Correct 962 ms 272536 KB Output is correct
30 Correct 1051 ms 272628 KB Output is correct
31 Correct 1046 ms 272536 KB Output is correct
32 Correct 929 ms 259560 KB Output is correct
33 Correct 1508 ms 259268 KB Output is correct
34 Correct 305 ms 188100 KB Output is correct
35 Correct 1808 ms 262260 KB Output is correct
36 Correct 1463 ms 260276 KB Output is correct
37 Correct 1786 ms 261200 KB Output is correct
38 Correct 1546 ms 261020 KB Output is correct
39 Correct 1533 ms 271220 KB Output is correct
40 Correct 881 ms 271228 KB Output is correct
41 Correct 1024 ms 260648 KB Output is correct
42 Correct 472 ms 260324 KB Output is correct
43 Correct 1567 ms 268720 KB Output is correct
44 Correct 1561 ms 261280 KB Output is correct
45 Correct 829 ms 271664 KB Output is correct
46 Correct 1077 ms 271252 KB Output is correct
47 Correct 966 ms 272704 KB Output is correct
48 Correct 998 ms 272608 KB Output is correct
49 Correct 959 ms 272768 KB Output is correct
50 Correct 1054 ms 272648 KB Output is correct
51 Correct 602 ms 270656 KB Output is correct
52 Correct 653 ms 270564 KB Output is correct