Submission #15609

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
15609	2015-07-13 10:18:26	gs14004	Parachute rings (IOI12_rings)	C++14	100 / 100	1912 ms	85884 KiB

rings

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/*
    O(N+M+C) solution for Rings (N = number of vertices; M = number of calls to Link; C = number of calls to CountCritical).
     
    Author: Giovanni Paolini
*/
 
#include <cstdio>
#include <vector>
#include <cassert>
 
 
using namespace std;
 
int const MAXN = 1000000;
 
int n;
bool quadruplication = 0;
 
int numcycles = 0;
int cycle_length; // If numcycles==1, here we store the length of the only cycle
 
int other_endpoint[4][MAXN]; // -1 if the node is not an endpoint, otherwise the other endpoint
vector<int> neighbours[MAXN];
 
int destroyed[4]; // The destroyed node of each graph (only if quadruplication==TRUE)
int degree[4][MAXN];
bool islinear[4]; // Whether each graph is linear or not
 
void Init(int k) {
    n = k;
 
 
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• Subtask 5: 31 / 31