Submission #581931

#	Time	Username	Problem	Language	Result	Execution time	Memory
581931		8e7	Mechanical Doll (IOI18_doll)	C++17	6 / 100	125 ms	17088 KiB

doll

#include "doll.h"
//Challenge: Accepted
#include <bits/stdc++.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 100005
#define pii pair<int, int>
#define ff first
#define ss second
#define io ios_base::sync_with_stdio(0);cin.tie(0);
vector<int> pos[maxn];
int rx[4*maxn], ry[4*maxn];
int cur;
void build(int ind, vector<int> v) {
	if (v.size() <= 2) {
		if (v.size() == 1) {
			rx[-ind] = ind;	
			ry[-ind] = v[0];	
		} else {
			rx[-ind] = v[0];
			ry[-ind] = v[1];
		}
	} else {
		vector<int> l, r;
		for (int i = 0;i < v.size();i++) {
			if (i % 2 == 0) l.push_back(v[i]);
			else r.push_back(v[i]);
		}
		rx[-ind] = --cur;
		build(cur, l);
		ry[-ind] = --cur;
		build(cur, r);
	}
}
void create_circuit(int M, std::vector<int> A) {
	int N = A.size();
	A.push_back(0);
	for (int i = 0;i < N;i++) {
		pos[A[i]].push_back(i);
	}
	cur = 0;
	
	std::vector<int> C(M + 1);
	C[0] = A[0];
	for (int i = 1; i <= M; ++i) {
		if (pos[i].size()) {
			vector<int> ini;
			for (int j:pos[i]) ini.push_back(A[j+1]);
			//debug(i);
			//pary(ini.begin(), ini.end());
			C[i] = --cur;
			build(cur, ini);
		} else {
			C[i] = i;
		}
	}
	int S = -cur;
	std::vector<int> X(S), Y(S);
	for (int k = 1; k <= S; ++k) {
		X[k-1] = rx[k], Y[k-1] = ry[k];
	}
	pary(C.begin(), C.end());
	pary(X.begin(), X.end());
	pary(Y.begin(), Y.end());
	answer(C, X, Y);
}
/*
4 4
1 2 1 3
*/

Compilation message (stderr)

doll.cpp: In function 'void build(int, std::vector<int>)':
doll.cpp:36:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |   for (int i = 0;i < v.size();i++) {
      |                  ~~^~~~~~~~~~
doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:14:19: warning: statement has no effect [-Wunused-value]
   14 | #define pary(...) 0
      |                   ^
doll.cpp:73:2: note: in expansion of macro 'pary'
   73 |  pary(C.begin(), C.end());
      |  ^~~~
doll.cpp:14:19: warning: statement has no effect [-Wunused-value]
   14 | #define pary(...) 0
      |                   ^
doll.cpp:74:2: note: in expansion of macro 'pary'
   74 |  pary(X.begin(), X.end());
      |  ^~~~
doll.cpp:14:19: warning: statement has no effect [-Wunused-value]
   14 | #define pary(...) 0
      |                   ^
doll.cpp:75:2: note: in expansion of macro 'pary'
   75 |  pary(Y.begin(), Y.end());
      |  ^~~~

• Subtask 1: 2 / 2
• Subtask 2: 4 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 18
• Subtask 6: 0 / 56