Submission #847049

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
847049	2023-09-09 03:39:13	math_rabbit_1028	Longest Trip (IOI23_longesttrip)	C++17	100 / 100	15 ms	604 KiB

longesttrip

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#include <bits/stdc++.h>
#include "longesttrip.h"
using namespace std;
int find_connected(vector<int> v, vector<int> arr) {
    int s = 0, e = arr.size() - 1;
    while (s < e) {
        int m = (s + e) / 2;
        vector<int> temp;
        for (int i = s; i <= m; i++) temp.push_back(arr[i]);
        if (are_connected(v, temp)) e = m;
        else s = m + 1;
    }
    return s;
}
vector<int> longest_trip(int N, int D) {
    int n = N;
    vector<int> res;
    int ch[256]; for (int i = 0; i < n; i++) ch[i] = 0;
    vector<int> p1, p2;
    p1.push_back(0);
    if (are_connected({0}, {1})) p1.push_back(1);
    else p2.push_back(1);
    for (int i = 2; i < n; i += 2) {
        if (!are_connected({p1.back()}, {i})) swap(p1, p2);
        p1.push_back(i);
        if (i == n - 1) continue;
        if (are_connected({i}, {i + 1})) {
 
 
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Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:54:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |                 for (int i = b + 1; i < p1.size(); i++) res.push_back(p1[i]);
      |                                     ~~^~~~~~~~~~~
longesttrip.cpp:56:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |                 for (int i = a; i < p2.size(); i++) res.push_back(p2[i]);
      |                                 ~~^~~~~~~~~~~
longesttrip.cpp:63:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |             for (int i = 0; i < p1.size(); i++) res.push_back(p1[i]);
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:64:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |             for (int i = 0; i < p2.size(); i++) res.push_back(p2[i]);
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:70:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |             for (int i = 0; i < p1.size(); i++) res.push_back(p1[i]);
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:71:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |             for (int i = 0; i < p2.size(); i++) res.push_back(p2[i]);
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:75:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |             for (int i = 0; i < p1.size(); i++) res.push_back(p1[i]);
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:76:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |             for (int i = 0; i < p2.size(); i++) res.push_back(p2[i]);
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:81:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |             for (int i = 0; i < p1.size(); i++) res.push_back(p1[i]);
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:82:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |             for (int i = 0; i < p2.size(); i++) res.push_back(p2[i]);
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:21:9: warning: variable 'ch' set but not used [-Wunused-but-set-variable]
   21 |     int ch[256]; for (int i = 0; i < n; i++) ch[i] = 0;
      |         ^~

• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 25 / 25
• Subtask 4: 60 / 60