Submission #840761

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
840761	2023-08-31 16:47:10	emeraldblock	Longest Trip (IOI23_longesttrip)	C++17	100 / 100	18 ms	428 KiB

longesttrip

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#include <bits/stdc++.h>
#include <random>
#include "longesttrip.h"
using namespace std;
vector<int> pi,ip;
bool check(vector<int> a, vector<int> b) {
    for (auto& x : a) x = pi[x];
    for (auto& x : b) x = pi[x];
    return are_connected(a,b);
}
vector<int> isline(vector<int> a) {
    for (auto& x : a) x = pi[x];
#ifdef LOCAL
    for (int i = 1; i < a.size(); ++i) {
        assert(are_connected({a[i-1]}, {a[i]}));
    }
#endif
    return a;
}
mt19937 mt(361);
std::vector<int> longest_trip(int N, int D)
{
    pi.resize(N);
    iota(pi.begin(),pi.end(),0);
    shuffle(pi.begin(),pi.end(),mt);
 
 
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• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 25 / 25
• Subtask 4: 60 / 60