Submission #833874

#	Time	Username	Problem	Language	Result	Execution time	Memory
833874		Ellinor	Sorting (IOI15_sorting)	C++14	0 / 100	1 ms	340 KiB

sorting

//#include<bits/stdc++.h>
#include <iostream>
#include <vector>
#include <queue>
#include <string>
#include <cmath>
#include <cstdlib>
#include <set>
#include <iomanip>
#include <limits>
#include <map>
#include <assert.h>
#include <algorithm>
#include <list>
#include <iterator>
#include <fstream>
#include <random>
#include <unordered_map>
#include <array>

#define rep(i,a,b) for (int i = (a); i < b; i++)
#define pb push_back
#define all(x) x.begin(), x.end()
typedef long long ll;
//typedef pair<int, int> pii;

// fast

#include "sorting.h"

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[])
{
    // P[0] = 0;
	// Q[0] = 0;

    int R = 0;
    rep(i,2,N)
    {
        if (S[i] != i + 1) 
        {
            R++;
            //
        }
    }

    if (Y[0] == 0)
    {
        if (S[0] != 0) R++;
    }
    else
    {
        if (R % 2 == 0) if (S[0] != 0) R++;
        else if (S[1] != 0) R++;
        //
    }

	return R;
}

// 20p, 0, 0
// 16p, 0, 1, first all else, then 1 -> 1 (if needed)

Compilation message (stderr)

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:52:12: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
   52 |         if (R % 2 == 0) if (S[0] != 0) R++;
      |            ^
sorting.cpp:31:39: warning: unused parameter 'M' [-Wunused-parameter]
   31 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[])
      |                                   ~~~~^
sorting.cpp:31:46: warning: unused parameter 'X' [-Wunused-parameter]
   31 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[])
      |                                          ~~~~^~~
sorting.cpp:31:64: warning: unused parameter 'P' [-Wunused-parameter]
   31 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[])
      |                                                            ~~~~^~~
sorting.cpp:31:73: warning: unused parameter 'Q' [-Wunused-parameter]
   31 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[])
      |                                                                     ~~~~^~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 12
• Subtask 3: 0 / 16
• Subtask 4: 0 / 18
• Subtask 5: 0 / 20
• Subtask 6: 0 / 26