Submission #619390

#	Time	Username	Problem	Language	Result	Execution time	Memory
619390		Dremix10	Unscrambling a Messy Bug (IOI16_messy)	C++17	21 / 100	3 ms	468 KiB

messy

#include "messy.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pi;
typedef pair<ll,ll> pl;
//#define endl '\n'
#define all(x) (x).begin(),(x).end()
#define F first
#define S second
#ifdef dremix
    #define p(x) cerr<<#x<<" = "<<x<<endl;
    #define p2(x,y) cerr<<#x<<" , "<<#y<<" = "<<x<<" , "<<y<<endl;
    #define pp(x) cerr<<#x<<" = "<<x.F<<"-"<<x.S<<endl;
    #define pv(x) cerr<<#x<<" = {";for(auto v : x)cerr<<v<<", ";cerr<<"}"<<endl;
    #define ppv(x) cerr<<#x<<" = {";for(auto v : x)cerr<<v.F<<"-"<<v.S<<", ";cerr<<"}"<<endl;
#else
    #define p(x) {}
    #define p2(x,y) {}
    #define pp(x) {}
    #define pv(x) {}
    #define ppv(x) {}
#endif
const int N = 3e5+5;
const int MOD = 1e9+7;
const ll INF = 1e18+5;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_int_distribution <ll> distr;
ll rnd(ll x, ll y){return distr(rng)%(y-x+1)+x;}

std::vector<int> restore_permutation(int n, int w, int r) {
    int i;
    string s = "", reset = "";

    /// for sub 3:
    /// can write 32 numbers for each of the 32 bits
    /// can read 10 numbers for each of the 32 bits

    for(i=0;i<n;i++)reset += '0';
    int B = 11;
    int blocks[B] = {12,12,12,12,12,12,12,12,12,12,8};
    int j;
    string base = reset;
    int k = 0;

    vector<int> temp(n);
    iota(all(temp),0);
    shuffle(all(temp),rng);

    for(auto x : temp)cerr<<x<<" ";
    cerr<<endl;
    
    for(i=0;i<B;i++){
        s = base;
        for(j=0;j<blocks[i];j++){
            s[k+j] = '1';
            base[k+j] = '1';
            //p2(s,base)
            add_element(s);
            add_element(base);
            s[k+j] = '0';
        }
        k += blocks[i];
    }

    k = 0;
    s = reset;
    s[0] = '1';
    for(i=0;i<B-1;i++){ 
        s[k + blocks[i]] = '1';
        //p(s)
        add_element(s);
        s[k] = '0';
        k += blocks[i];
    }


    compile_set();
    vector<int> ans(n,-1);

    s = reset;
    vector<vector<int> > idx(B);
    bool v[n] = {};
    for(i=0;i<B;i++){

        for(j=0;j<n;j++){
            if(v[j])continue;
            s[j] = '1';
            bool p = check_element(s);
            s[j] = '0';

            if(p){
                idx[i].push_back(j);
                v[j] = true;
            }
        }
        assert(idx[i].size() == blocks[i]);

        for(auto x : idx[i])
            s[x] = '1';
    }

    s = reset;
    int singles[B];
    
    for(auto x : idx[0])for(auto y : idx[1]){
        s[x] = '1';
        s[y] = '1';
        //p(s)
        bool p = check_element(s);
        s[x] = '0';
        s[y] = '0';
        if(p){
            singles[0] = x;
            singles[1] = y;
            ans[x] = 0;
            ans[y] = blocks[0];
            break;
        }
    }
    k = blocks[0] + blocks[1];
    for(i=2;i<B;i++){
        s[singles[i-1]] = '1';
        for(auto x : idx[i]){
            s[x] = '1';
            //p(s)
            bool p = check_element(s);
            s[x] = '0';
            if(p){
                singles[i] = x;
                ans[x] = k;
                break;
            }
        }
        s[singles[i-1]] = '0';
        k += blocks[i];
    }

    pv(singles)
    k = 0;

    for(i=0;i<B;i++){
        pv(idx[i])
        s[singles[i]] = '1';
        p(s)
        for(j=1;j<blocks[i];j++){
            for(auto x : idx[i]){
                if(ans[x] != -1)continue;
                ///p2(k+j,x)
                s[x] = '1';
                bool p = check_element(s);
                if(p){
                    ///p2(k+j,x)
                    ans[x] = k+j;
                    break;
                }
                s[x] = '0';
            }
        }
        k += blocks[i];
    }

    /*
    add_element("0");
    compile_set();
    check_element("0");
    return std::vector<int>();
    */

   return ans;
}

Compilation message (stderr)

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from messy.cpp:2:
messy.cpp: In function 'std::vector<int> restore_permutation(int, int, int)':
messy.cpp:97:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   97 |         assert(idx[i].size() == blocks[i]);
      |                ~~~~~~~~~~~~~~^~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 18
• Subtask 3: 0 / 11
• Subtask 4: 21 / 21
• Subtask 5: 0 / 30