Submission #113703

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
113703	2019-05-28 00:38:12	thebes	Cave (IOI13_cave)	C++14	100 / 100	416 ms	640 KiB

cave

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include "cave.h"
#include <bits/stdc++.h>
using namespace std;
const int MN = 5005;
int *arr, N, i, tmp, d[MN], s[MN];
void st(int l,int r,int v){
  for(;l<=r;l++){
    if(d[l]!=-1) arr[l]=d[l];
    else arr[l]=v;
  }
}
void rec(int l,int r,int id,int val){
  if(l == r){
    s[l] = id;
    d[l] = val;
    st(l,r,0);
    return;
  }
  int m = l+r>>1;
  st(l, m, !val);
  int v = tryCombination(arr);
  st(l, m, val);
  if(v == id) rec(l, m, id, val);
  else rec(m+1, r, id, val);
}
void exploreCave(int n){
  N = n;
  memset(d, -1, sizeof(d));
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

cave.cpp: In function 'void rec(int, int, int, int)':
cave.cpp:20:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m = l+r>>1;
          ~^~

• Subtask 1: 12 / 12
• Subtask 2: 13 / 13
• Subtask 3: 21 / 21
• Subtask 4: 30 / 30
• Subtask 5: 24 / 24