Submission #432838

#	Time	Username	Problem	Language	Result	Execution time	Memory
432838		balbit	Sorting (IOI15_sorting)	C++14	0 / 100	2 ms	332 KiB

sorting

#include "sorting.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pii pair<int, int>
#define f first
#define s second

#ifdef BALBIT
#define bug(...) cerr<<"#"<<__LINE__<<": "<<#__VA_ARGS__<<"- ", _do(__VA_ARGS__)
template<typename T> void _do( T && x) {cerr<<x<<endl;}
template<typename T, typename ...S> void _do( T && x, S && ...y) {cerr<<x<<", "; _do(y...);}
#else
#define bug(...)
#endif // BALBIT


#define ALL(x) (x).begin(), (x).end()
#define SZ(x) (int )((x).size())
#define pb push_back

#define REP(i,n) for (int i = 0; i<n; ++i)
#define REP1(i,n) for (int i = 1; i<=n; ++i)

#define MX(a,b) a = max(a,b)
#define MN(a,b) a = min(a,b)
//signed main(){bug(1,2);}

int findSwapPairs(int n, int S[], int M, int X[], int Y[], int P[], int Q[]) {
    if (n == 1) return 0;
        swap(S[0], S[1]);
    int IT = 0;
    REP(B, 2) {
        if (S[0] != B && S[1] != B) {
            for (int j = 2; j<n; ++j) {
                if (S[j] == B) {
                    int k = 0;
                    if (S[k] <= 1) ++k;
                    P[IT] = k; Q[IT] = j;
                    swap(S[k], S[j]);
                    ++IT;
                    swap(S[0], S[1]);
                }
            }
        }
    }
    REP(i,n) {
//        assert(X[i] == 0 && Y[i] == 0);
        for (int j = i+1; j<n; ++j) {
            if (S[j] ==i) {
                P[IT] = i; Q[IT] = j;
                swap(S[i], S[j]);
                swap(S[0], S[1]);
                ++IT;
                break;
            }
        }
    }
    if (S[0] == 0) {
        P[IT] = 0; Q[IT] = 0;
        ++IT;

    }
	return IT;
}

Compilation message (stderr)

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:30:39: warning: unused parameter 'M' [-Wunused-parameter]
   30 | int findSwapPairs(int n, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                   ~~~~^
sorting.cpp:30:46: warning: unused parameter 'X' [-Wunused-parameter]
   30 | int findSwapPairs(int n, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                          ~~~~^~~
sorting.cpp:30:55: warning: unused parameter 'Y' [-Wunused-parameter]
   30 | 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