Submission #114691

#	Time	Username	Problem	Language	Result	Execution time	Memory
114691		arman_ferdous	Sorting (IOI15_sorting)	C++17	20 / 100	12 ms	384 KiB

sorting

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

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
    for(int i = 0; i < M; i++)
    	swap(S[X[i]], S[Y[i]]);

    int cur = 0, R = 0;
    for(int i = 0; i < N; ) {
    	if(S[i] == i) { i++; continue; }

    	int p = i, q = S[i];
    	for(int j = M-1; j > cur; j--) {
    		if((X[j] == p && Y[j] == q) || (X[j] == q && Y[j] == p)) swap(p, q);
    		else {
	    		if(X[j] == p) p = Y[j];
	    		else if(Y[j] == p) p = X[j];
	    		if(X[j] == q) q = Y[j];
	    		else if(Y[j] == q) q = X[j]; 
	    	}
    	}

    	P[R] = p, Q[R] = q;
    	R++; cur++;
    	swap(S[i], S[S[i]]);
    }
    // while(R < M) {
    // 	P[R] = Q[R] = 0;
    // 	R++;
    // }
    // for(int i = 0; i < R; i++)
    // 	cout << P[i] << " " << Q[i] << endl;
	return R;
}

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