Submission #1026397

#	Time	Username	Problem	Language	Result	Execution time	Memory
1026397		vjudge1	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	852 KiB

messy

#include <vector>
using namespace std;
#include "messy.h"
vector<int>ans;
int n_;
void write(int l,int r){
    if(l==r)return;
    string str(n_,'1');
    for(int i=l;i<=r;i++)
        str[i]='0';
    for(int i=l;i<=l+r>>1;i++){
        str[i]='1';
        add_element(str);
        str[i]='0';
    }
    write(l,l+r>>1);
    write(l+r+2>>1,r);
}
void read(int l,int r,vector<int>pos){
    if(l==r)return void(ans[pos[0]]=l);
    string str(n_,'1');
    for(auto i:pos)
        str[i]='0';
    vector<int>posl,posr;
    for(auto i:pos){
        str[i]='1';
        if(check_element(str))
            posl.push_back(i);
        else posr.push_back(i);
        str[i]='0';
    }
    read(l,l+r>>1,posl);
    read(l+r+2>>1,r,posr);
}
vector<int> restore_permutation(int n, int w, int r) {
    n_=n;
    ans.resize(n);
    write(0,n-1);
    compile_set();
    vector<int>v2(n);
    for(int i=0;i<n;i++)
        v2[i]=i;
    read(0,n-1,v2);
    return ans;
}

Compilation message (stderr)

messy.cpp: In function 'void write(int, int)':
messy.cpp:11:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   11 |     for(int i=l;i<=l+r>>1;i++){
      |                    ~^~
messy.cpp:16:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   16 |     write(l,l+r>>1);
      |             ~^~
messy.cpp:17:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   17 |     write(l+r+2>>1,r);
      |           ~~~^~
messy.cpp: In function 'void read(int, int, std::vector<int>)':
messy.cpp:32:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   32 |     read(l,l+r>>1,posl);
      |            ~^~
messy.cpp:33:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   33 |     read(l+r+2>>1,r,posr);
      |          ~~~^~

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