Submission #963979

#	Time	Username	Problem	Language	Result	Execution time	Memory
963979		LucaIlie	ICC (CEOI16_icc)	C++17	90 / 100	128 ms	664 KiB

icc

#include "icc.h"
#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 100;
int leader[MAX_N + 1];
vector<int> group[MAX_N + 1];

bool qry( vector<int> a, vector<int> b ) {
    int aa[a.size()], bb[b.size()];
    for ( int i = 0; i < a.size(); i++ )
        aa[i] = a[i];
    for ( int i = 0; i < b.size(); i++ )
        bb[i] = b[i];
    return query( a.size(), b.size(), aa, bb );
}

pair<int, int> solve( vector<int> a, vector<int> b ) {
    if ( b.size() == 1 ) {
        if ( a.size() == 1 )
            return { a[0], b[0] };

        vector<int> a1, a2;
        for ( int i = 0; i < a.size() / 2; i++ )
            a1.push_back( a[i] );
        for ( int i = a.size() / 2; i < a.size(); i++ )
            a2.push_back( a[i] );

        if ( qry( a1, b ) )
            return solve( a1, b );
        return solve( a2, b );
    }

    vector<int> b1, b2;
    for ( int i = 0; i < b.size() / 2; i++ )
        b1.push_back( b[i] );
    for ( int i = b.size() / 2; i < b.size(); i++ )
        b2.push_back( b[i] );

    if ( qry( a, b1 ) )
        return solve( a, b1 );
    return solve( a, b2 );
}

void run( int n ) {
    for ( int v = 1; v <= n; v++ ) {
        leader[v] = v;
        group[v].push_back( v );
    }
    for ( int i = 0; i < n - 1; i++ ) {
        vector<vector<int>> g;
        for ( int v = 1; v <= n; v++ ) {
            if ( leader[v] == v )
                g.push_back( group[v] );
        }


        unsigned seed = chrono::system_clock::now().time_since_epoch().count() + rand();
        shuffle( g.begin(), g.end(), default_random_engine( seed ) );
        int perm[(int)log2( g.size() ) + 1];
        for ( int j = 0; j <= log2( g.size() ); j++ )
            perm[j] = j;
        shuffle( perm, perm + (int)log2( g.size() ) + 1, default_random_engine( seed ) );
        int p = 0;
        while ( 1 ) {
            vector<int> s[2];
            for ( int i = 0; i < g.size(); i++ ) {
                int b = (i >> perm[p]) & 1;
                for ( int v: g[i] )
                    s[b].push_back( v );
            }

            if ( qry( s[0], s[1] ) ) {
                auto e = solve( s[0], s[1] );
                setRoad( e.first, e.second );
                int x = leader[e.first], y = leader[e.second];
                for ( int v: group[y] ) {
                    leader[v] = x;
                    group[x].push_back( v );
                }
                group[y].clear();
                break;
            }

            p++;
        }
    }
}

Compilation message (stderr)

icc.cpp: In function 'bool qry(std::vector<int>, std::vector<int>)':
icc.cpp:12:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for ( int i = 0; i < a.size(); i++ )
      |                      ~~^~~~~~~~~~
icc.cpp:14:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for ( int i = 0; i < b.size(); i++ )
      |                      ~~^~~~~~~~~~
icc.cpp: In function 'std::pair<int, int> solve(std::vector<int>, std::vector<int>)':
icc.cpp:25:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         for ( int i = 0; i < a.size() / 2; i++ )
      |                          ~~^~~~~~~~~~~~~~
icc.cpp:27:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |         for ( int i = a.size() / 2; i < a.size(); i++ )
      |                                     ~~^~~~~~~~~~
icc.cpp:36:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for ( int i = 0; i < b.size() / 2; i++ )
      |                      ~~^~~~~~~~~~~~~~
icc.cpp:38:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |     for ( int i = b.size() / 2; i < b.size(); i++ )
      |                                 ~~^~~~~~~~~~
icc.cpp: In function 'void run(int)':
icc.cpp:68:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |             for ( int i = 0; i < g.size(); i++ ) {
      |                              ~~^~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 22 / 22
• Subtask 4: 21 / 21
• Subtask 5: 29 / 29
• Subtask 6: 0 / 10