Submission #1019951

#	Time	Username	Problem	Language	Result	Execution time	Memory
1019951		mindiyak	Split the Attractions (IOI19_split)	C++14	7 / 100	43 ms	13916 KiB

split

#include "split.h"
#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")
#include <bits/stdc++.h>
#include <string>
#include <iostream>
#include <cmath>
#include <numeric>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<int, int> pl;
typedef pair<ld, ld> pd;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<ld> vd;
typedef vector<long> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
#define FOR(i, a, b) for (int i = a; i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FORd(i, a, b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i, a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto &a : x)
#define uid(a, b) uniform_int_distribution<int>(a, b)(rng)
#define len(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define F first
#define nl endl
#define S second
#define lb lower_bound
#define ub upper_bound
#define aint(x) x.begin(), x.end()
#define raint(x) x.rbegin(), x.rend()
#define ins insert
const int MOD = 1000000007;

vvi paths(100005,vi());
vi ans,lengths;

void dfs(int pos,int prev,int counter,int type){
	// cout << pos << " " << counter << " " << type << endl;
	if(type == 3)return;
	ans[pos] = type+1;
	counter++;
	if(counter == lengths[type]){
		type++;
		counter = 0;
	}
	for(int node:paths[pos]){
		if(node == prev)continue;
		dfs(node,pos,counter,type);
	}
}


vector<int> find_split(int n, int a, int b, int c, vi p, vi q) {
	lengths = {a,b,c};
	FOR(i,0,p.size()){
		paths[p[i]].pb(q[i]);
		paths[q[i]].pb(p[i]);
	}
	int head = 0;
	FOR(i,0,n){
		if(paths[i].size()==1){
			head = i;
			break;
		}
	}
	ans = vi(n,0);
	dfs(head,-1,0,0);
	return ans;
}

Compilation message (stderr)

split.cpp: In function 'std::vector<int> find_split(int, int, int, int, vi, vi)':
split.cpp:22:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 | #define FOR(i, a, b) for (int i = a; i < (b); i++)
      |                                        ^
split.cpp:62:2: note: in expansion of macro 'FOR'
   62 |  FOR(i,0,p.size()){
      |  ^~~

• Subtask 1: 7 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 24
• Subtask 5: 0 / 36