Submission #1054630

#	Time	Username	Problem	Language	Result	Execution time	Memory
1054630		thieunguyenhuy	Unscrambling a Messy Bug (IOI16_messy)	C++17	0 / 100	1 ms	860 KiB

messy

#ifndef hwe
	#include "messy.h"
#endif

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

#define popcount(n) (__builtin_popcountll((n)))
#define clz(n) (__builtin_clzll((n)))
#define ctz(n) (__builtin_ctzll((n)))
#define lg(n) (63 - __builtin_clzll((n)))
#define BIT(n, i) (((n) >> (i)) & 1ll)
#define MASK(i) (1ll << (i))
#define FLIP(n, i) ((n) ^ (1ll << (i)))
#define ON(n, i) ((n) | MASK(i))
#define OFF(n, i) ((n) & ~MASK(i))

#define Int __int128
#define fi first
#define se second

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long long, int> pli;
typedef pair<int, long long> pil;
typedef vector<pair<int, int>> vii;
typedef vector<pair<long long, long long>> vll;
typedef vector<pair<long long, int>> vli;
typedef vector<pair<int, long long>> vil;

template <class T1, class T2>
bool maximize(T1 &x, T2 y) {
    if (x < y) {
        x = y;
        return true;
    }
    return false;
}
template <class T1, class T2>
bool minimize(T1 &x, T2 y) {
    if (x > y) {
        x = y;
        return true;
    }
    return false;
}

template <class T>
void remove_duplicate(vector<T> &ve) {
    sort (ve.begin(), ve.end());
    ve.resize(unique(ve.begin(), ve.end()) - ve.begin());
}

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
template <class T> T random(T l, T r) {
    return uniform_int_distribution<T>(l, r)(rng);
}
template <class T> T random(T r) {
    return rng() % r;
}

const int N = 1e6 + 5;
const int MOD = 1e9 + 7;
const int inf = 1e9;
const ll INF = 1e18;

vector<int> ans;

#ifdef hwe
void add_element(string a) {
	cerr <<  "Add: " << a << '\n';
}
void compile_set() {

}
bool check_element(string x) {
	cerr << "Check: " << x << '\n';
	bool ret; cin >> ret; return ret;
}
#endif

void add(int l, int r, string s) {
	int mid = l + r >> 1;

	for (int i = l; i <= mid; ++i) {
		s[i] = '1'; add_element(s); s[i] = '0';
	}

	if (l == r) return;

	string le = s, ri = s;
	for (int i = mid + 1; i <= r; ++i) le[i] = '1';
	for (int i = l; i <= mid; ++i) ri[i] = '1';
	
	add(l, mid, le);
	add(mid + 1, r, ri);
}

void check(int l, int r, string s) {
	if (l == r) {
		int before = ans.size();
		for (int i = 0; i < s.size(); ++i) {
			if (s[i] == '0') ans.emplace_back(i);
		}
		assert(ans.size() == before + 1);
		return;
	}

	int mid = l + r >> 1;

	string le = s, ri = s;
	for (int i = 0; i < s.size(); ++i) {
		if (s[i] == '1') continue;
		s[i] = '1'; bool flag = check_element(s);
		if (flag) le[i] = '0', ri[i] = '1';
		else le[i] = '1', ri[i] = '0';
	}

	check(l, mid, le);
	check(mid + 1, r, ri);
}

vector<int> restore_permutation(int n, int w, int r) {
	ans.clear(); ans.reserve(n);
	add(0, n - 1, string(n, '0'));
	compile_set();
	check(0, n - 1, string(n, '0'));
	return ans;
}

#ifdef hwe
signed main() {


    cerr << '\n'; return 0;
}
#endif

Compilation message (stderr)

messy.cpp: In function 'void add(int, int, std::string)':
messy.cpp:86:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   86 |  int mid = l + r >> 1;
      |            ~~^~~
messy.cpp: In function 'void check(int, int, std::string)':
messy.cpp:105:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |   for (int i = 0; i < s.size(); ++i) {
      |                   ~~^~~~~~~~~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from messy.cpp:5:
messy.cpp:108:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  108 |   assert(ans.size() == before + 1);
      |          ~~~~~~~~~~~^~~~~~~~~~~~~
messy.cpp:112:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  112 |  int mid = l + r >> 1;
      |            ~~^~~
messy.cpp:115:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  115 |  for (int i = 0; i < s.size(); ++i) {
      |                  ~~^~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 18
• Subtask 3: 0 / 11
• Subtask 4: 0 / 21
• Subtask 5: 0 / 30