Submission #775986

#	Time	Username	Problem	Language	Result	Execution time	Memory
775986		peteza	Toy Train (IOI17_train)	C++14	0 / 100	1034 ms	197380 KiB

train

#include <bits/stdc++.h>
#include "train.h"
using namespace std;
using pii = pair<int, int>;

vector<int> adj[5005], tran[5005];
int dist[5005][5005], disttran[5005][5005];
bool vis[5005], self[5005];

int st;
queue<pii> q;

std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {
	std::vector<int> res(a.size());
	for(int i=0;i<u.size();i++)
		adj[u[i]].push_back(v[i]),
		tran[v[i]].push_back(u[i]),
		self[u[i]] |= (u[i] == v[i]);
	if(a[0] == 1) { // arezou (sub 3), find cyc with charging station
		for(st=0;st<a.size();st++) {
			for(int i=0;i<=a.size();i++) { //normal
				vis[i] = 0;
				dist[st][i] = disttran[st][i] = 1000000000;
			}
			q.emplace(st, 0);
			while(!q.empty()) {
				auto e = q.front(); q.pop();
				if(vis[e.first]) continue;
				vis[e.first] = 1; dist[st][e.first] = e.second;
				for(int E:adj[e.first]) 
					q.emplace(E, e.second+1);
			}
			for(int i=0;i<=a.size();i++) { //transposed
				vis[i] = 0;
			}
			q.emplace(st, 0);
			while(!q.empty()) {
				auto e = q.front(); q.pop();
				if(vis[e.first]) continue;
				vis[e.first] = 1; disttran[st][e.first] = e.second;
				for(int E:tran[e.first]) 
					q.emplace(E, e.second+1);
			}

			
		}
		for(int i=0;i<a.size();i++) {
			bool yas = self[i] && r[i];
			for(int k=0;k<a.size();k++) {
				if(i != k && (dist[i][k] + disttran[k][i] < a.size()) && r[k]) {
					yas = 1;
					break;
				}
			}
			res[i] = yas;			
		}
	} else { //        borzou (sub 4), find cyc with NO charging station
  
	}
	return res;
}

Compilation message (stderr)

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:15:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for(int i=0;i<u.size();i++)
      |              ~^~~~~~~~~
train.cpp:20:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |   for(st=0;st<a.size();st++) {
      |            ~~^~~~~~~~~
train.cpp:21:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |    for(int i=0;i<=a.size();i++) { //normal
      |                ~^~~~~~~~~~
train.cpp:33:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |    for(int i=0;i<=a.size();i++) { //transposed
      |                ~^~~~~~~~~~
train.cpp:47:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |   for(int i=0;i<a.size();i++) {
      |               ~^~~~~~~~~
train.cpp:49:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |    for(int k=0;k<a.size();k++) {
      |                ~^~~~~~~~~
train.cpp:50:47: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     if(i != k && (dist[i][k] + disttran[k][i] < a.size()) && r[k]) {
      |                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 0 / 11
• Subtask 5: 0 / 12
• Subtask 6: 0 / 51