oj.uz

Submission #444426

# Submission time Handle Problem Language Result Execution time Memory
444426 2021-07-14T04:48:54 Z blue The Collection Game (BOI21_swaps) C++17
0 / 100
 0 ms 200 KB 
#include "swaps.h"
#include <vector>
#include <iostream>
using namespace std;
 
int N;
int V;
 
vector<int> r;
 
void do_comparisons(vector<int> A, vector<int> B)
{
    vector<int> a, b;
 
    for(int i = 0; i < A.size(); i++)
    {
        if(0 <= A[i] && A[i] < N && 0 <= B[i] && B[i] < N)
        {
            a.push_back(A[i]);
            b.push_back(B[i]);
        }
    }
 
    if(a.size() == 0) return;
  
    for(int i = 0; i < a.size(); i++)
    {
        schedule(r[ a[i] ], r[ a[i] ]);
    }
 
    vector<int> C = visit();
 
    for(int i = 0; i < a.size(); i++)
    {
        if(C[i] == 0)
            swap(r[ a[i] ], r[ b[i] ]);
    }
}
 
 
void solve(int n, int v)
{
    N = n;
    V = v;
    r = vector<int>(N);
    for(int i = 1; i <= N; i++) r[i - 1] = i;
 
 
    for(int v = 1; v <= min(V, N); v++)
    {
        vector<int> A, B;
        if(v % 2 == 0)
        {
            for(int i = 0; i+1 < N; i += 2)
            {
                A.push_back(i);
                B.push_back(i+1);
            }
        }
        else
        {
            for(int i = 1; i+1 < N; i += 2)
            {
                A.push_back(i);
                B.push_back(i+1);
            }
        }
 
        do_comparisons(A, B);
    }
 
    // for(int X = 2; X <= N; X *= 2)
    // {
    //     // cerr << "X = " << X << '\n';
    //     int p = 0, q = X-1;
    //     vector<int> A, B;
    //     while(p < N)
    //     {
    //         for(int i = 0; i < X/2; i++)
    //         {
    //             if(p + i < N && 0 <= q - i && q - i < N)
    //             {
    //                 A.push_back(p + i);
    //                 B.push_back(q - i);
    //             }
    //         }
    //
    //         p += X;
    //         q += X;
    //     }
    //
    //     do_comparisons(A, B);
    //     A.clear();
    //     B.clear();
    //
    //
    //
    //
    //     for(int Y = X/2; Y >= 2; Y /= 2)
    //     {
    //         for(int i = 0; i + Y/2 < N; i++)
    //         {
    //             if((i / (Y/2)) % 2 == 0)
    //             {
    //                 A.push_back(i);
    //                 B.push_back(i + Y/2);
    //             }
    //         }
    //         do_comparisons(A, B);
    //         A.clear();
    //         B.clear();
    //     }
    // }
 
    answer(r);
}

Compilation message

swaps.cpp: In function 'void do_comparisons(std::vector<int>, std::vector<int>)':
swaps.cpp:15:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for(int i = 0; i < A.size(); i++)
      |                    ~~^~~~~~~~~~
swaps.cpp:26:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for(int i = 0; i < a.size(); i++)
      |                    ~~^~~~~~~~~~
swaps.cpp:33:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     for(int i = 0; i < a.size(); i++)
      |                    ~~^~~~~~~~~~

Subtask #1
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 3.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 2.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #12
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Not correct
2 Halted 0 ms 0 KB -