Submission #158264

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
158264	2019-10-16 01:27:27	kig9981	Highway Tolls (IOI18_highway)	C++17	46 / 100	311 ms	15584 KiB

highway

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#include "highway.h"
#include <bits/stdc++.h>
 
using namespace std;
 
vector<int> adj[90000];
int dist1[90000], dist2[90000];
bool chk[90000];
 
void find_pair(int N, vector<int> U, vector<int> V, int A, int B)
{
  int M=U.size(), S, T, s, e, E;
  vector<int> W(M,0), C1, C2;
  queue<int> Q;
  long long D=ask(W);
  for(int i=0;i<M;i++) {
    adj[U[i]].push_back(V[i]);
    adj[V[i]].push_back(U[i]);
  }
  s=0; e=N-1;
  while(s<=e) {
    int m=(s+e)>>1;
    for(int i=0;i<N;i++) W[i]=i<=m;
    if(ask(W)!=D) e=m-1;
    else s=m+1;
  }
  E=s;
  memset(dist1,0x7f,sizeof(dist1));
  memset(dist2,0x7f,sizeof(dist2));
  dist1[U[E]]=0; Q.push(U[E]);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

highway.cpp: In function 'void find_pair(int, std::vector<int>, std::vector<int>, int, int)':
highway.cpp:51:53: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   for(int i=0;i<M;i++) W[i]=dist1[U[i]]<dist2[U[i]] && dist1[U[i]]>=m || dist1[V[i]]<dist2[V[i]] && dist1[V[i]]>=m;
                             ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 7 / 7
• Subtask 3: 6 / 6
• Subtask 4: 33 / 33
• Subtask 5: 0 / 18
• Subtask 6: 0 / 31