Submission #875870

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
875870	2023-11-20 16:22:43	awu	Construction of Highway (JOI18_construction)	C++14	100 / 100	1433 ms	30104 KiB

construction

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#include <bits/extc++.h>
using namespace __gnu_pbds;
using namespace std;
// #define int long long
#define ll long long
// #define double long double
#define all(x) x.begin(), x.end()
#define debug(x) do{auto _x = x; cerr << #x << " = " << _x << endl;} while(0)
#define f first
#define s second
// #define endl '\n'
using pii = pair<int, int>;
const int inf = 1 << 30;
// const ll inf = 1ll << 62;
struct maxtree {
  vector<pii> t;
  int n;
  maxtree(int s) {
    n = 1;
    while(n < s) n *= 2;
    t.resize(n * 2, {-1, -1});
  }
  void update(int i, pii v) {
    for(t[i += n] = v; i > 1; i /= 2) {
      t[i / 2] = max(t[i], t[i ^ 1]);
    }
 
 
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Compilation message (stderr)

construction.cpp: In lambda function:
construction.cpp:99:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |       while(j < rv.size()) {
      |             ~~^~~~~~~~~~~
construction.cpp:100:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  100 |         if(i < lv.size() && lv[i].f < rv[j].f) {
      |            ~~^~~~~~~~~~~
construction.cpp:110:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  110 |       while(i < lv.size()) {
      |             ~~^~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 9 / 9
• Subtask 3: 84 / 84