Submission #231737

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
231737	2020-05-14 14:53:27	AlexLuchianov	Traffic (IOI10_traffic)	C++14	100 / 100	1305 ms	159204 KiB

traffic

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#include "traffic.h"
#include <vector>
#include <iostream>
using namespace std;
int const nmax = 1000000;
int v[1 + nmax], sum[1 + nmax];
int far[1 + nmax];
vector<int> g[1 + nmax];
void dfs(int node, int parent){
  far[node] = parent;
  sum[node] = v[node];
  for(int h = 0; h < g[node].size(); h++){
    int to = g[node][h];
    if(to != parent) {
      dfs(to, node);
      sum[node] += sum[to];
    }
  }
}
int eval(int node){
  int result = sum[1] - sum[node];
  for(int h = 0; h < g[node].size(); h++){
    int to = g[node][h];
    if(to != far[node])
      result = max(result, sum[to]);
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

traffic.cpp: In function 'void dfs(int, int)':
traffic.cpp:15:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int h = 0; h < g[node].size(); h++){
                  ~~^~~~~~~~~~~~~~~~
traffic.cpp: In function 'int eval(int)':
traffic.cpp:26:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int h = 0; h < g[node].size(); h++){
                  ~~^~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 25 / 25