Submission #1043707

#	Time	Username	Problem	Language	Result	Execution time	Memory
1043707		dpsaveslives	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	608 KiB

messy

#include "messy.h"
#include <bits/stdc++.h>
using namespace std;
int n;
vector<int> ans;
void solve(int l, int r){ //we can do recursion!
    if(l == r) return;
    int mid = (l+r)>>1;
    string s = "";
    for(int i = 0;i<n;++i){
        s += '0';
    }
    for(int i = l;i<=r;++i){
        s[i] = '1';
    }
    for(int i = mid+1;i<=r;++i){
        s[i] = '0';
        add_element(s);
        s[i] = '1';
    }
    solve(l,mid); solve(mid+1,r);
}
void read(int l, int r, vector<int> v){
    if(l == r){
        ans[v[0]] = l;
        return;
    }
    int mid = (l+r)>>1;
    string s = "";
    for(int i = 0;i<n;++i){
        s += '0';
    }
    for(auto x : v){
        s[x] = '1';
    }
    vector<int> low, high;
    for(auto x : v){
        s[x] = '0';
        if(check_element(s)){
            high.push_back(x);
        }
        else{
            low.push_back(x);
        }
        s[x] = '1';
    }
    read(l,mid,low); read(mid+1,r,high);
}
vector<int> restore_permutation(int N, int w, int r){
    n = N; ans = vector<int>(N);
    solve(0,N-1);
  	compile_set(); 
    vector<int> v;
    for(int i = 0;i<N;++i){
        v.push_back(i);
    }
    read(0,N-1,v);
    return ans;
}

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