Submission #886752

#	Time	Username	Problem	Language	Result	Execution time	Memory
886752		velislavgarkov	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	2 ms	856 KiB

messy

#include <iostream>
#include <vector>
#include "messy.h"
using namespace std;
string sbeg, s1, cur;
vector <int> curv;
vector <int> ans, perm;
void add_el(int l, int r) {
    if (l>=r) return;
    int mid=(l+r)/2;
    s1=sbeg;
    for (int i=l;i<=r;i++) s1[i]='0';
    for (int i=l;i<=mid;i++) {
        cur=s1;
        cur[i]='1';
        add_element(cur);
    }
    add_el(l,mid);
    add_el(mid+1,r);
}
void check_el(int l, int r, vector <int> v) {
    if (l==r) perm[l]=v[0];
    if (l>=r) return;
    vector <int> lef, ri;
    s1=sbeg;
    for (auto i:v) s1[i]='0';
    for (auto i:v) {
        cur=s1;
        cur[i]='1';
        if (check_element(cur)) {
            lef.push_back(i);
        } else {
            ri.push_back(i);
        }
    }
    int mid=(l+r)/2;
    check_el(l,mid,lef);
    check_el(mid+1,r,ri);
}
vector<int> restore_permutation(int N, int w, int r) {
    int n=N;
    ans.resize(n); perm.resize(n);
    for (int i=0;i<n;i++) {
        sbeg+='1';
        cur+='1';
    }
    add_el(0,n-1);
    compile_set();
    for (int i=0;i<n;i++) curv.push_back(i);
    check_el(0,n-1,curv);
    for (int i=0;i<n;i++) ans[perm[i]]=i;
    return ans;
}

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