Submission #425958

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
425958	2021-06-13T12:35:01 Z	_fractal	Sorting (IOI15_sorting)	C++14	Compilation error	0 ms	0 KB

sorting

#include "sorting.h"
#include <iostream>
#include <algorithm>
using namespace std;


int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
	int A[N], pos[N];
	for (int i = 0; i < N; ++i)
		A[i] = i;
	for (int i = M - 1; i >= 1; --i)
		swap(A[X[i]], A[Y[i]]);/*
	for (int i = 0; i < M; ++i)
		cerr << P[i] << " " << Q[i] << '\n';
	cerr << "---------\n";*/
	swap(S[X[0]], S[Y[0]]);
	int r = 0;
	for (int i = 0; i < M; ++i) {
		for (int j = 0; j < N; ++j)
			pos[A[j]] = j;
		for (int j = 0; j < N; ++j) {
			if (pos[S[j]] != j) {
				Q[i] = j, P[i] = pos[S[j]];
				++r;
				break;
			}
		}
		if (Q[i]] == P[i])
			break;
		swap(S[Q[i]], S[P[i]]);
		if (i + 1 < M) {
			swap(S[X[i + 1]], S[Y[i + 1]]);
			swap(A[X[i + 1]], A[Y[i + 1]]);
		}
	}/*
	for (int i = 0; i < M; ++i) {
		cerr << X[i] << " " << Y[i] << '\n';
		if (i < r)
			cerr << P[i] << " " << Q[i] << '\n';
	}
	for (int i = 0; i < N; ++i)
		cerr << S[i] << " \n"[i + 1 == N];*/
	return r;
}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:28:11: error: expected ')' before ']' token
   28 |   if (Q[i]] == P[i])
      |      ~    ^
      |           )
sorting.cpp:28:11: error: expected primary-expression before ']' token