Submission #133397

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
133397	2019-07-20 14:03:04	icypiggy	Toy Train (IOI17_train)	C++14	100 / 100	643 ms	1840 KiB

train

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#include <iostream>
#include <vector>
#include <bitset>
#include <queue>
#include <string.h>
#include <assert.h>
using namespace std;
const int n_max = 6000;
vector<int> backward[n_max]; // edges run in the reverse direction!
vector<int> adj[n_max];
int deg[n_max]; // this is the out degree
void init(vector<int> &u, vector<int> &v) {
    memset(deg, 0, sizeof(deg));
    for(int i=0; i<u.size(); i++) {
        backward[v[i]].push_back(u[i]);
        adj[u[i]].push_back(v[i]);
        deg[u[i]]++;
    }
}
vector<int> who_wins(vector<int> a,  vector<int> r, vector<int> u, vector<int> v) {
    init(u,v);
    bool bad = true;
    while(bad) {
        bad = false;
        vector<int> ans(a.size(), 0); // initially b always wins
        queue<int> bfs;
        for(int i=0; i<r.size(); i++) {
            if(r[i]) {
 
 
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Compilation message (stderr)

train.cpp: In function 'void init(std::vector<int>&, std::vector<int>&)':
train.cpp:16:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<u.size(); i++) {
                  ~^~~~~~~~~
train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:29:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<r.size(); i++) {
                      ~^~~~~~~~~
train.cpp:53:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<r.size(); i++) {
                      ~^~~~~~~~~
train.cpp:80:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<u.size(); i++) {
                      ~^~~~~~~~~

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