제출 #787690

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
787690		vjudge1	Editor (BOI15_edi)	C++17	100 / 100	214 ms	72508 KiB

edi

//i_love_aisukiuwu
#include <bits/stdc++.h>
using namespace std;

#ifdef LOCAL
	#include "/home/trucmai/.vim/tools.h"
	#define debug(x...) cerr << "\e[91m"<<__func__<<":"<<__LINE__<<" [" << #x << "] = ["; _print(x); cerr << "\e[39m" << endl;
	#else
	#define debug(x...)
#endif

void open(){
  if(fopen("i.inp","r")){
    freopen("i.inp","r",stdin);
    freopen("o.out","w",stdout);
  }
}

#define ll long long
#define all(a) (a).begin(), (a).end()
#define vi vector<ll>
#define pi pair<ll,ll>
#define pii pair<ll,pair<ll,ll>>
#define fi first
#define se second
#define gcd __gcd
#define mset(a,v) memset(a, v, sizeof(a))
#define endl '\n'
#define spc " "

const int MN1 = 1e6 + 5,MN2 = 1e4 + 5,LOG = 27;
const ll MOD = 1e9 + 7,INF = 1e9;
ll n,a[MN1],up[MN1][LOG],lvl[MN1];
void solve(){
  cin>>n;
  for(ll i = 1;i <= n;++i) cin>>a[i]; 
  auto lift=[&](ll u,ll w)->ll{
    if(lvl[u] <= w) return u;
    for(ll i = LOG-1;i >= 0;--i)
      if(lvl[up[u][i]] > w) u = up[u][i]; 
    return up[u][0];
  };
  for(ll i = 1;i <= n;++i){
    if(a[i] < 0){
      lvl[i] = -a[i];
      ll tmp = lift(i-1,lvl[i]-1); 
      up[i][0] = lift(tmp-1,lvl[i]-1);
      //cout<<"DEBUG "<<tmp<<endl;
      for(ll j = 1;j < LOG;++j) up[i][j] = up[up[i][j-1]][j-1];
    }
    cout<<a[lift(i,0)]<<endl;
  }
}

signed main(){
  cin.tie(0) -> sync_with_stdio(0);
  open();
  ll t = 1; //cin>>t;
  while(t--) solve(); 
  
  #ifdef LOCAL
    cerr << endl << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
  #endif
}

컴파일 시 표준 에러 (stderr) 메시지

edi.cpp: In function 'void open()':
edi.cpp:14:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     freopen("i.inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~
edi.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen("o.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 15 / 15
• Subtask 3: 28 / 28
• Subtask 4: 37 / 37