Submission #599231

#	Time	Username	Problem	Language	Result	Execution time	Memory
599231		8e7	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	3 ms	468 KiB

messy

//Challenge: Accepted
#include <bits/stdc++.h>
#include "messy.h"
using namespace std;
#ifdef zisk
void debug(){cout << endl;}
template<class T, class ... U> void debug(T a, U ... b){cout << a << " ", debug(b...);}
template<class T> void pary(T l, T r){
	while (l != r) cout << *l << " ", l++;
	cout << endl;
}
#else
#define debug(...) 0
#define pary(...) 0
#endif
#define ll long long
#define maxn 200005
#define pii pair<int, int>
#define ff first
#define ss second

void genstring(int n, int l, int r) { //[l, r)
	if (r - l == 1) return;
	string a(n, '0');
	for (int i = 0;i < n;i++) {
		if (i < l || i >= r) a[i] = '1';
	}
	int m = (l + r) / 2;
	for (int i = l;i < m;i++) {
		string b = a;
		b[i] = '1';
		debug("add", b);
		add_element(b);
	}
	genstring(n, l, m), genstring(n, m, r);	
}
void solve(int n, int l, int r, vector<int> cand, vector<int> &ans) {
	debug("solve", l, r);
	pary(cand.begin(), cand.end());
	if (r - l == 1) {
		ans[cand[0]] = l;
		return;
	}
	int m = (l + r) / 2;
	string a(n, '1');
	for (int i:cand) a[i] = '0';
	vector<int> lef, rig;	
	for (int i:cand) {
		string b = a;
		b[i] = '1';
		if (check_element(b)) {
			lef.push_back(i);
		} else {
			rig.push_back(i);
		}
	}	
	solve(n, l, m, lef, ans);
	solve(n, m, r, rig, ans);
}
vector<int> restore_permutation(int n, int W, int R) {
	genstring(n, 0, n);
    compile_set();
	vector<int> ini(n), ans(n);
	for (int i = 0;i < n;i++) ini[i] = i;
	solve(n, 0, n, ini, ans);
	//pary(ans.begin(), ans.end());
    return ans;
}
/*
2 1 3 0
add 1000 
add 0100 
add 1011 
add 1110 

0001
0100
1011
1101
*/

Compilation message (stderr)

messy.cpp: In function 'void genstring(int, int, int)':
messy.cpp:13:20: warning: statement has no effect [-Wunused-value]
   13 | #define debug(...) 0
      |                    ^
messy.cpp:32:3: note: in expansion of macro 'debug'
   32 |   debug("add", b);
      |   ^~~~~
messy.cpp: In function 'void solve(int, int, int, std::vector<int>, std::vector<int>&)':
messy.cpp:13:20: warning: statement has no effect [-Wunused-value]
   13 | #define debug(...) 0
      |                    ^
messy.cpp:38:2: note: in expansion of macro 'debug'
   38 |  debug("solve", l, r);
      |  ^~~~~
messy.cpp:14:19: warning: statement has no effect [-Wunused-value]
   14 | #define pary(...) 0
      |                   ^
messy.cpp:39:2: note: in expansion of macro 'pary'
   39 |  pary(cand.begin(), cand.end());
      |  ^~~~

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