Submission #600284

#	Time	Username	Problem	Language	Result	Execution time	Memory
600284		keta_tsimakuridze	Mechanical Doll (IOI18_doll)	C++14	53 / 100	165 ms	22016 KiB

doll

#include "doll.h"
#include<bits/stdc++.h>
using namespace std;
const int Nn = 2e5 + 5;
int n;
vector<int> X, Y, x[Nn];
int s = 0;
void build(vector<int> x) {
    vector<int> vl, vr;
    assert(s <= 2 * n);
    X.push_back(0); Y.push_back(0);
    for(int i = 0; i < x.size(); i++) {
        if(i % 2) vr.push_back(x[i]);
        else vl.push_back(x[i]);
    }
    if(vl.size() > vr.size()) {
        vr.push_back(vl.back());
        vl.back() = s;
    }
    if(vr.size() == 1) {
        X[-s - 1] = vl[0];
        Y[-s - 1] = vr[0];
        return;
    }
    int id = -s - 1;
    --s; X[id] = s;
    build(vl);
 
    --s; Y[id] = s;
    build(vr);
}
void create_circuit(int M, std::vector<int> A) {
    A.push_back(0);
    s = 0; n = A.size();
    vector<int> c(M + 1);
    vector<bool> f(M + 1);
    for(int i = (int)A.size() - 2; i >= 0; i--) {
        x[A[i]].push_back(A[i + 1]);
    }
    for(int i = 1; i <= M; i++) {
        if(x[i].size()) {
            reverse(x[i].begin(), x[i].end());
            c[i] = --s;
            build(x[i]);
        }
    }
    c[0] = A[0];
    answer(c, X, Y);
}

Compilation message (stderr)

doll.cpp: In function 'void build(std::vector<int>)':
doll.cpp:12:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for(int i = 0; i < x.size(); i++) {
      |                    ~~^~~~~~~~~~

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