Submission #243121

#	Time	Username	Problem	Language	Result	Execution time	Memory
243121		osaaateiasavtnl	Broken Device (JOI17_broken_device)	C++14	100 / 100	62 ms	3312 KiB

Anna

#include<bits/stdc++.h>
using namespace std;
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcountll
#define ll long long
#define mp make_pair
#define f first
#define s second
#define Time (double)clock()/CLOCKS_PER_SEC
#define debug(x) std::cout << #x << ": " << x << '\n';
 
#include "Annalib.h"
 
int sh1[200];
mt19937 rnd1(2007);
 
void Anna( int N, long long X, int K, int P[] ){
 
    for (int i = 0; i < 200; ++i)
        sh1[i] = rnd1()%3;
    
    /*
    for (int i = 0; i < 10; ++i)
        cout << up1[i];
    cout << endl;            
    */
 
    vector <int> tri;
    while (X) {
        tri.app(X%3);
        X /= 3;        
    }
 
    reverse(all(tri));
 
    vector <bool> used(N);
    for (int i = 0; i < K; ++i)
        used[P[i]] = 1;
 
    /*
    cout << "tri : ";
    for (auto e : tri)
        cout << e << ' ';
    cout << endl;
    */
 
    int tryed = 0;
 
    int i = 0, ptr = 0;

    int em = 0;

    while (i + 1 < N) {
        auto check = [&]() {
            if (ptr == tri.size())
                return false;
            int x = tri[ptr]+1;
            x += sh1[i];
            if (x > 3)
                x -= 3;
 
            bool ans = (!used[i] || !(x&1)) && (!used[i+1] || !((x >> 1) & 1));
 
            if ((!used[i] || !used[i+1]) && !ans)
                ++tryed;
 
            return (!used[i] || !(x&1)) && (!used[i+1] || !((x >> 1) & 1));
        };

        if (!used[i] && !used[i+1])
            ++em;

        if (check()) {
            int x = tri[ptr]+1;
            x += sh1[i];
            if (x > 3)
                x -= 3;
            ++ptr;
 
            Set(i, x & 1);
            Set(i + 1, (x >> 1) & 1);
        }   
        else {
            Set(i, 0);
            Set(i + 1, 0);
        }   
        i += 2;
    }   
 
    if (ptr < tri.size()) { 

        /*
        cout << "tri : " << tri.size() << endl;
        debug(em);

        for (int i = 0; i < tri.size(); ++i) {
            int x = tri[i]+1;
            x += sh1[i];
            if (x > 3)
                x -= 3;
            cout << x << ' ';
        }   
        cout << endl;

        ptr = 0;
        i = 0;
        while (i + 1 < N) {
            auto check = [&]() {
                if (ptr == tri.size())
                    return false;
                int x = tri[ptr]+1;
                x += sh1[ptr];
                if (x > 3)
                    x -= 3;
     
                bool ans = (!used[i] || !(x&1)) && (!used[i+1] || !((x >> 1) & 1));
     
                if ((!used[i] || !used[i+1]) && !ans) {
                    cout << "tryed " << i << ' ' << x << endl;
                }   
     
                return (!used[i] || !(x&1)) && (!used[i+1] || !((x >> 1) & 1));
            };

            if (check()) {
                int x = tri[ptr]+1;
                x += sh1[ptr];
                if (x > 3)
                    x -= 3;
                ++ptr;
     
            }   
            else {
            }   
            i += 2;
        }   

        exit(0);

        */

        while (1)
            cout << "find" << endl;
        exit(0);
    }   
}

Bruno

#include<bits/stdc++.h>
using namespace std;
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcountll
#define ll long long
#define mp make_pair
#define f first
#define s second
#define Time (double)clock()/CLOCKS_PER_SEC
#define debug(x) std::cout << #x << ": " << x << '\n';
 
#include "Brunolib.h"
 
int sh2[200];
mt19937 rnd2(2007);
 
long long Bruno( int N, int A[] ){
 
    for (int i = 0; i < 200; ++i)
        sh2[i] = rnd2()%3;
 
    /*
    for (int i = 0; i < 10; ++i)
        cout << up2[i];
    cout << endl;            
    */
 
    ll ans = 0;
    int ptr = 0;
    for (int i = 0; i < N; i += 2) {
        int add = A[i] + (A[i+1]<<1);
        if (add) {
 
            add -= sh2[i];
            if (add < 1)
                add += 3;                
            ++ptr;
 
            --add;
            ans = ans * 3 + add;
        }   
    }
    return ans;
}       

Compilation message (stderr)

Anna.cpp: In lambda function:
Anna.cpp:57:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if (ptr == tri.size())
                 ~~~~^~~~~~~~~~~~~
Anna.cpp: In function 'void Anna(int, long long int, int, int*)':
Anna.cpp:92:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (ptr < tri.size()) { 
         ~~~~^~~~~~~~~~~~

• Subtask 1: 100 / 100