Submission #330480

#	Time	Username	Problem	Language	Result	Execution time	Memory
330480		aquablitz11	Mechanical Doll (IOI18_doll)	C++14	47 / 100	151 ms	11868 KiB

doll

#include <bits/stdc++.h>
#include "doll.h"
using namespace std;

const int INF = 2e9;

vector<int> C, X, Y;
int cnt = 0;

int get_switch(int x, int y) {
    X.push_back(x);
    Y.push_back(y);
    return --cnt;
}

int create_tree(const vector<int> &v) {
    if (v.size() == 1)
        return v[0];
    vector<int> vx, vy;
    for (int i = 0; i < v.size(); ++i) {
        if (i % 2 == 0)
            vx.push_back(v[i]);
        else
            vy.push_back(v[i]);
    }
    int x = create_tree(vx);
    int y = create_tree(vy);
    return get_switch(x, y);
}

void create_circuit(int M, vector<int> A) {
    int n = A.size();
    int k = 0;
    while ((1<<k) < n)
        ++k;
    n = 1<<k;
    vector<int> v(A.begin()+1, A.end());
    v.resize(n, INF);
    v[n-1] = 0;
    int r = create_tree(v);
    C = vector<int>(M+1, r);
    C[0] = A[0];
    for (auto &x: X) {
        if (x == INF)
            x = r;
    }
    for (auto &y: Y) {
        if (y == INF)
            y = r;
    }
    answer(C, X, Y);
}

Compilation message (stderr)

doll.cpp: In function 'int create_tree(const std::vector<int>&)':
doll.cpp:20:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for (int i = 0; i < v.size(); ++i) {
      |                     ~~^~~~~~~~~~

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 10 / 10
• Subtask 5: 9.0000000036 / 18
• Subtask 6: 28.0000000112 / 56