Submission #230363

#	Time	Username	Problem	Language	Result	Execution time	Memory
230363		achibasadzishvili	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	7 ms	512 KiB

messy

#include <bits/stdc++.h>
#define ll int
#define f first
#define s second
#define pb push_back
using namespace std;
#include "messy.h"
vector<ll>P;
ll nn;
void ask(ll l , ll r){
    if(l == r)return;
    string s = "";
    for(int i=0; i<nn; i++)
        s += '0';
    for(int i=0; i<nn; i++)
        if(i < l || i > r)
            s[i] = '1';
    for(int i=l; i <= (l + r) / 2; i++){
        s[i] = '1';
        add_element(s);
        s[i] = '0';
    }
    ask(l , (l + r) / 2);
    ask((l + r) / 2 + 1 , r);
}
void solve(vector<ll>x , vector<ll>y){
    if(x.size() == 1){
        P[y[0]] = x[0];
        return;
    }
    string s = "";
    for(int i=0; i<nn; i++)
        s += '1';
    for(int i=0; i<y.size(); i++)
        s[y[i]] = '0';
    vector<ll>v1 , v2 , x1 , x2;
    for(int i=0; i<y.size(); i++){
        s[y[i]] = '1';
        if(check_element(s)){
            //cout << y[i] << '\n';
            v1.pb(y[i]);
        }
        else v2.pb(y[i]);
        s[y[i]] = '0';
    }
    for(int i=0; i<x.size(); i++)
        if(i < (int)x.size() / 2)
            x1.pb(x[i]);
        else
            x2.pb(x[i]);
    solve(x1 , v1);
    solve(x2 , v2);
}
vector<int> restore_permutation(int N, int w, int r){
    nn = N;
    string s = "";
    vector<ll>v1 , v2;
    for(int i=0; i<nn; i++){
        v1.pb(i);
        v2.pb(i);
    }
    ask(0 , nn - 1);
    for(int i=0; i<nn; i++)
        P.pb(0);
    compile_set();
    solve(v1 , v2);
    return P;
}

Compilation message (stderr)

messy.cpp: In function 'void solve(std::vector<int>, std::vector<int>)':
messy.cpp:34:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<y.size(); i++)
                  ~^~~~~~~~~
messy.cpp:37:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<y.size(); i++){
                  ~^~~~~~~~~
messy.cpp:46:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<x.size(); i++)
                  ~^~~~~~~~~

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