Submission #286595

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
286595	2020-08-30 15:11:40	tmwilliamlin168	Sky Walking (IOI19_walk)	C++14	100 / 100	1971 ms	141372 KiB

walk

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#include "walk.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ar array
const int mxN=1e5, mxT=1e6;
int n, m, pg[mxN], t, ua, ub;
vector<int> ta[mxN], tr[mxN];
ll d[mxT];
vector<ar<ll, 2>> adj[mxT];
ll min_distance(vector<int> x, vector<int> h, vector<int> l, vector<int> r, vector<int> y, int a, int b) {
  n=x.size();
  m=l.size();
  vector<vector<int>> v(n);
  v[a].push_back(0);
  v[b].push_back(0);
  for(int _ : {1, 0}) {
    for(int i=0; i<m; ++i) {
      ta[l[i]].push_back(i);
      tr[r[i]].push_back(i);
    }
    set<ar<int, 2>> s;
    for(int i=0; i<n; ++i) {
      vector<ar<int, 2>> w;
      for(pg[i]=i-1; ~pg[i]&&h[pg[i]]<=h[i]; pg[i]=pg[pg[i]]) {
        auto it=s.lower_bound({h[pg[i]]});
        if(it!=s.end()&&(*it)[0]<=h[i])
 
 
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Compilation message (stderr)

walk.cpp: In function 'long long int min_distance(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, int, int)':
walk.cpp:74:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |   for(int j=0; j+1<v[i].size(); ++j) {
      |                ~~~^~~~~~~~~~~~
walk.cpp:78:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |   for(int j=0; j<v[i].size(); ++j) {
      |                ~^~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 14 / 14
• Subtask 3: 15 / 15
• Subtask 4: 18 / 18
• Subtask 5: 43 / 43