Submission #116309

#	Time	Username	Problem	Language	Result	Execution time	Memory
116309		ojuztest3141411	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	4 ms	640 KiB

messy

#include <bits/stdc++.h>
#include "messy.h"

using namespace std;

void go (int n, int l, int r) {
  if (l + 1 == r) return;
  int m = l + r >> 1;
  string s = "";
  for (int i = 0; i < n; ++i) {
    s += '1';
  }
  for (int i = l; i < r; ++i) {
    s[i] = '0';
  }
  for (int i = l; i < m; ++i) {
    s[i] = '1';
    add_element(s);
    s[i] = '0';
  }
  go(n, l, m);
  go(n, m, r);
}

vector <int> v;

void kill (int n, int l, int r, string no) {
  if (l + 1 == r) {
    for (int i = 0; i < n; ++i) {
      if (no[i] == '0') {
	v[i] = l;
	break;
      }
    }
    return;
  }
  string x = no, y = "";
  for (int i = 0; i < n; ++i) {
    y += '1';
  }
  for (int i = 0; i < n; ++i) {
    if (no[i] == '0') {
      no[i] = '1';
      if (check_element(no)) {
	x[i] = '1';
	y[i] = '0';
      }
      no[i] = '0';
    }
  }
  int m = l + r >> 1;
  kill(n, l, m, y);
  kill(n, m, r, x);
}

vector <int> restore_permutation (int n, int w, int r) {
  go(n, 0, n);
  compile_set();
  v.resize(n);
  string s = "";
  for (int i = 0; i < n; ++i) {
    s += '0';
  }
  kill(n, 0, n, s);
  return v;
}

Compilation message (stderr)

messy.cpp: In function 'void go(int, int, int)':
messy.cpp:8:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int m = l + r >> 1;
           ~~^~~
messy.cpp: In function 'void kill(int, int, int, std::__cxx11::string)':
messy.cpp:51:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int m = l + r >> 1;
           ~~^~~

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 11 / 11
• Subtask 4: 21 / 21
• Subtask 5: 30 / 30