#include "messy.h"
#include <bits/stdc++.h>
#define sz(x) (int)(x).size()
using namespace std;
// 2 1 3 0 -> 3 1 0 2
vector<int> p;
void dq(int l, int r, set<int> &pos) {
if (l==r) {
p[l]=*pos.begin();
return;
}
string s(sz(p), '1'); for (auto &u: pos) s[u]='0';
set<int> sl, sr;
for (auto &u: pos) {
s[u]='1';
if (check_element(s)) {
sl.insert(u);
} else sr.insert(u);
s[u]='0';
}
int m=(l+r)/2;
dq(l, m, sl), dq(m+1, r, sr);
}
vector<int> restore_permutation(int n, int w, int r) {
for (int val=1; val<n; val*=2) {
for (int i=0; i<n; i+=val*2) {
string s(n, '1');
for (int j=i; j<i+2*val; j++) s[j]='0';
for (int j=i; j<i+val; j++) {
s[j]='1';
add_element(s);
s[j]='0';
}
}
}
compile_set();
set<int> pos; for (int i=0; i<n; i++) pos.insert(i);
p.resize(n);
dq(0, n-1, pos);
vector<int> np(n); for (int i=0; i<n; i++) np[p[i]]=i;
return np;
}
컴파일 시 표준 에러 (stderr) 메시지
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
| ^~~~
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