Submission #76581

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
76581	2018-09-15 00:50:35	Xylofo	Werewolf (IOI18_werewolf)	C++14	100 / 100	1886 ms	235564 KiB

werewolf

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#include "werewolf.h"
#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i = a; i < b; ++i)
using vi = vector<int>;
using graph = vector<vi>;
const int LG = 28;
struct Tree {
  graph t;
  vi p;
  vector<vi> fastUp;
  int fd(int a) { return p[a] == a ? a : p[a] = fd(p[a]); }
  int n;
  vi start, end, fromP;
  int root;
  Tree(int rev, const graph &g) {
    n = g.size();
    t.resize(n);
    fastUp.assign(n, vi(LG,-1));
    p.resize(n);
    fromP = start = end = p;
    rep(i,0,n) p[i] = i;
    for(int i = rev*(n-1); i >= 0 && i < n; i += 1 - 2*rev) {
      for(int j:g[i]) if(rev ^ (j < i)) {
        int jj = fd(j);
        if(jj != i) {
          p[jj] = i;
          t[i].push_back(jj);
 
 
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Compilation message (stderr)

werewolf.cpp: In function 'vi check_validity(int, vi, vi, vi, vi, vi, vi)':
werewolf.cpp:4:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(int i = a; i < b; ++i)
werewolf.cpp:104:7:
   rep(i,0,X.size()) {
       ~~~~~~~~~~~~                   
werewolf.cpp:104:3: note: in expansion of macro 'rep'
   rep(i,0,X.size()) {
   ^~~

• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 34 / 34
• Subtask 4: 51 / 51