Submission #415145

#	Time	Username	Problem	Language	Result	Execution time	Memory
415145		ly20	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	3 ms	484 KiB

messy

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

vector <int> resp;
int m;
void cria(int ini, int fim) {
    string s;
    //s.clear();
    //printf("oi %d %d\n", ini, fim);
    if(ini == fim) return;
    //printf("oi\n");
    //printf("%d\n", m);
    s.resize(m);
    for(int i = 0; i < m; i++) {
        if(i < ini || i > fim) s[i] = '0';
        else s[i] = '1';
    }
    int md = (ini + fim) / 2;
    //printf("%d %d\n", ini, md);
    for(int i = ini; i <= md; i++) {
        s[i] = '0';
        //printf("oi1\n");
        add_element(s);
        //printf("oi2\n");
        //cout << s << endl;
        s[i] = '1';
    }
    //printf("%d %d %d %d\n", ini, md, md + 1, fim);
    cria(ini, md);
    cria(md + 1, fim);
}
string olha;
void responde(int ini, int fim) {
    //printf("%d %d\n", ini, fim);
    vector <int> esq, dir;
    if(ini == fim) {
        for(int i = 0; i < m; i++){
            if(olha[i] == '1') {
                resp[i] = ini;
            }
        }
        return;
    }
    for(int i = 0; i < m; i++) {
        if(olha[i] == '1') {
            olha[i] = '0';
            if(check_element(olha)) {
                esq.push_back(i);
            }
            else {
                dir.push_back(i);
            }
            olha[i] = '1';
        }
    }
    int md = (ini + fim) / 2;
    for(int i = 0; i < dir.size(); i++) olha[dir[i]] = '0';
    responde(ini, md);
    for(int i = 0; i < dir.size(); i++) olha[dir[i]] = '1';
    for(int i = 0; i < esq.size(); i++) olha[esq[i]] = '0';
    responde(md + 1, fim);
    for(int i = 0; i < esq.size(); i++) olha[esq[i]] = '1';
}
vector<int> restore_permutation(int n, int w, int r) {
    m = n;
    cria(0, n - 1);
    compile_set();
    resp.resize(n);
    olha.resize(n);
    for(int i = 0; i < n; i++) olha[i] = '1';
    responde(0, n - 1);
    //printf("oi\n");
    //for(int i = 0; i < resp.size(); i++) printf("%d ", resp[i]);
    //printf("\n");
    return resp;
}

Compilation message (stderr)

messy.cpp: In function 'void responde(int, int)':
messy.cpp:58:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |     for(int i = 0; i < dir.size(); i++) olha[dir[i]] = '0';
      |                    ~~^~~~~~~~~~~~
messy.cpp:60:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |     for(int i = 0; i < dir.size(); i++) olha[dir[i]] = '1';
      |                    ~~^~~~~~~~~~~~
messy.cpp:61:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |     for(int i = 0; i < esq.size(); i++) olha[esq[i]] = '0';
      |                    ~~^~~~~~~~~~~~
messy.cpp:63:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |     for(int i = 0; i < esq.size(); i++) olha[esq[i]] = '1';
      |                    ~~^~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 11 / 11
• Subtask 4: 21 / 21
• Subtask 5: 30 / 30