Submission #553424

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
553424	2022-04-25 19:35:51	timreizin	Mechanical Doll (IOI18_doll)	C++17	100 / 100	126 ms	10960 KiB

doll

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#include "doll.h"
#include <array>
#include <cmath>
using namespace std;
void create_circuit(int m, std::vector<int> a)
{
    vector<int> c(m + 1, -1);
    c[0] = a.front();
    a.erase(a.begin());
    a.push_back(0);
    int n = a.size(), p = 1;
    while (p < n) p *= 2;
    if (p == 1) ++p;
    int delta = p - n, ind = 0;
    vector<array<int, 2>> adj{{0, 0}};
    auto dfs = [&delta, &adj, &ind](auto self, int h) -> int
    {
        if (h == -1) return 0;
        ++ind;
        int v = ind;
        adj.push_back({0, 0});
        if (delta & (1 << h))
        {
            delta ^= 1 << h;
            adj[v][0] = -1;
        }
        else adj[v][0] = -self(self, h - 1);
        adj[v][1] = -self(self, h - 1);
 
 
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Compilation message (stderr)

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:50:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for (int i = 1; i < adj.size(); ++i)
      |                     ~~^~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 4 / 4
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 18 / 18
• Subtask 6: 56 / 56