Submission #168209

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
168209	2019-12-12 02:39:07	Leonardo_Paes	Railway (BOI17_railway)	C++11	100 / 100	504 ms	30196 KiB

railway

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#include <bits/stdc++.h>
 
using namespace std;
 
const int maxn = 1e5+10;
 
int n, m, k;
 
int pai[maxn], nivel[maxn], siz[maxn], in[maxn], t;
 
int chain[maxn], head[maxn], pos[maxn], c, qtd;
 
int tree[4*maxn], lazy[4*maxn];
 
map<pair<int,int>,int> edges;
 
vector<int> grafo[maxn];
 
void dfs(int u, int p){
    siz[u] = 1, in[u] = ++t;
 
    for(int i=0; i<grafo[u].size(); i++){
        int v = grafo[u][i];
 
        if(v==p) continue;
 
        pai[v] = u, nivel[v] = nivel[u] + 1;
 
        dfs(v, u);
 
 
 
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Compilation message (stderr)

railway.cpp: In function 'void dfs(int, int)':
railway.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<grafo[u].size(); i++){
                  ~^~~~~~~~~~~~~~~~
railway.cpp: In function 'void hld(int)':
railway.cpp:82:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<grafo[u].size(); i++){
                  ~^~~~~~~~~~~~~~~~
railway.cpp:91:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<grafo[u].size(); i++){
                  ~^~~~~~~~~~~~~~~~
railway.cpp: In function 'int main()':
railway.cpp:173:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=0; j<atuais.size(); j++){
                      ~^~~~~~~~~~~~~~
railway.cpp:191:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<ans.size(); i++){
                  ~^~~~~~~~~~~
railway.cpp:158:13: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized]
         int last;
             ^~~~

• Subtask 1: 8 / 8
• Subtask 2: 15 / 15
• Subtask 3: 7 / 7
• Subtask 4: 29 / 29
• Subtask 5: 16 / 16
• Subtask 6: 25 / 25