Submission #418482

#	Time	Username	Problem	Language	Result	Execution time	Memory
418482		jacquesamsel	Mechanical Doll (IOI18_doll)	C++14	2 / 100	59 ms	9852 KiB

doll

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

void print_vecint(vector<int>& v) {
    for (auto x : v) {
        cout << x << " ";
    }
    cout << endl;
}

void answer(std::vector<int> C, std::vector<int> X, std::vector<int> Y);

int create_switch(vector<int>& X, vector<int>& Y, vector<int> runOutcomes) {
    int noOut = runOutcomes.size();
    X.push_back(runOutcomes[0]);
    Y.push_back(runOutcomes[1]);
    return -(X.size());
}

void create_circuit(int M, vector<int> A) {
    // A.push_back(0);
    A.insert(A.begin(), {0});
    vector<int> X;
    vector<int> Y;
    vector<int> C;
    C.assign(M+1, 0);
    vector<vector<int>> occurances;
    occurances.assign(M+1, {});
    for (int i = 0; i < A.size(); i++) {
        if (A[i] != 0) {
            occurances[A[i]].push_back(A[i+1]);
        }
    }
    unordered_map<int, int> switches;
    for (int i = 0; i < occurances.size(); i++) {
        if (occurances[i].size() > 1) {
            switches.insert({i, create_switch(X, Y, occurances[i])});
            C[i] = switches[i];
        }
    }
    // print_vecint(A);
    int last = 0;
    bool skip = false;
    for (int i = 0; i < A.size(); i++) {
        if (skip) {
            skip = false;
            continue;
        }
        if (switches.find(A[i+1]) != switches.end()) {
            C[A[i]] = A[i+1];
            skip = true;
        } else {
            // cout << "normal: " << A[i+1] << endl;
            C[A[i]] = A[i+1];
        }
        // print_vecint(C);
    }
    answer(C, X, Y);
}

Compilation message (stderr)

doll.cpp: In function 'int create_switch(std::vector<int>&, std::vector<int>&, std::vector<int>)':
doll.cpp:14:9: warning: unused variable 'noOut' [-Wunused-variable]
   14 |     int noOut = runOutcomes.size();
      |         ^~~~~
doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:29:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for (int i = 0; i < A.size(); i++) {
      |                     ~~^~~~~~~~~~
doll.cpp:35:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for (int i = 0; i < occurances.size(); i++) {
      |                     ~~^~~~~~~~~~~~~~~~~~~
doll.cpp:44:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     for (int i = 0; i < A.size(); i++) {
      |                     ~~^~~~~~~~~~
doll.cpp:42:9: warning: unused variable 'last' [-Wunused-variable]
   42 |     int last = 0;
      |         ^~~~

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