Submission #1277944

#	Time	Username	Problem	Language	Result	Execution time	Memory
1277944		cmiuc	Unscrambling a Messy Bug (IOI16_messy)	C++20	Compilation error	0 ms	0 KiB

messy

#include <iostream>
#include <vector>
#include "messy.h"

using namespace std;
vector<int> Ans, vc;

void compile_set(){

}

bool check_element(string s){
	return st.find(s) != st.end();
}

void Write(int n, int l, int r, string s){
	if (n == 0)
		return;
	for (int i=l;i<l + n;i++){
		s[i] = '1';
		add_element(s);
		s[i] = '0';
	}
	string s1 = s, s2 = s;

	for (int i=l;i<l + n;i++){
		s1[i + n] = '1';
		s2[i] = '1';
	}
	Write(n / 2, l, l + n, s1);
	Write(n / 2, l + n, r, s2);
}

void Read(int n, int l, int r, string s, vector<int> pos){
	if (n == 1 or n == 0){
		Ans[l] = pos[0];
		return;
	}
	vector<int> v1, v2;
	string s1 = s, s2 = s;

	for (int i=0;i<n;i++){
		s[pos[i]] = '1';
		if (check_element(s))
			v1.push_back(pos[i]);
		else
			v2.push_back(pos[i]);
		s[pos[i]] = '0';
	}

	for (int i : v1)
		s2[i] = '1';
	for (int i : v2)
		s1[i] = '1';

	n /= 2;
	Read(n, l, l + n, s1, v1);
	Read(n, l + n, r, s2, v2);
}

vector<int> restore_permutation(int n, int w, int r){
	Ans.resize(n);
	string s;
	for (int i=0;i<n;i++)
		vc.push_back(i), s += '0';

	Write(n / 2, 0, n, s);

	compile_set();

	Read(n, 0, n, s, vc);

	return Ans;
}

Compilation message (stderr)

messy.cpp: In function 'bool check_element(std::string)':
messy.cpp:13:16: error: 'st' was not declared in this scope; did you mean 's'?
   13 |         return st.find(s) != st.end();
      |                ^~
      |                s
messy.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
messy_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~