Submission #862701

#	Time	Username	Problem	Language	Result	Execution time	Memory
862701		IBory	Mechanical Doll (IOI18_doll)	C++17	2 / 100	21 ms	8268 KiB

doll

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

const int MAX = 100007;
vector<int> occur[MAX];
int cn[MAX];

void create_circuit(int M, vector<int> A) {
	int N = A.size();
	for (int i = 0; i < N; ++i) occur[A[i]].push_back(i);
	A.push_back(0);
	occur[0].push_back(0);

	vector<int> C, X, Y;
	C.resize(M + 1);
	int pv = 0, sn = 0;
	for (int i = 0; i < A.size(); ++i) {
		if (occur[pv].size() == 1) C[pv] = A[i];
		else {
			if (C[pv] < 0) continue;
			C[pv] = --sn;
			X.push_back(A[occur[pv][cn[pv]++] + 1]);
			Y.push_back(A[occur[pv][cn[pv]++] + 1]);
		}
		pv = A[i];
	}

	answer(C, X, Y);
}

Compilation message (stderr)

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:18:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |  for (int i = 0; i < A.size(); ++i) {
      |                  ~~^~~~~~~~~~

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