Submission #1087020

#	Time	Username	Problem	Language	Result	Execution time	Memory
1087020		the_coding_pooh	Sorting (IOI15_sorting)	C++14	20 / 100	1 ms	604 KiB

sorting

#include "sorting.h"
#include <bits/stdc++.h>
#define uwu return 0;
 
using namespace std;
 
const int SIZE = 2e5 + 5;
 
int s[SIZE], tar[SIZE], x[SIZE], y[SIZE], p[SIZE], q[SIZE], pos_of_val[SIZE];
 
 
void build(int M){
	for(int i = M - 1; i >= 0; i--){
		swap(tar[x[i]], tar[y[i]]);
	}
	return;
}
 
void get_sequence(int N, int M){
	for(int i = 0; i < M; i++){
		swap(s[x[i]], s[y[i]]);
		for(int j = 0; j < N; j++){
			pos_of_val[s[j]] = j;
		}
		swap(tar[x[i]], tar[y[i]]);
		for(int j = 0; j < N; j++){
			if(s[j] != tar[j]){
				swap(s[j], s[pos_of_val[tar[j]]]);
				p[i] = j;
				q[i] = pos_of_val[tar[j]];
				break;
			}
		}
	}
	return;
}
 
int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
	int cnt = 0;	
	for(int i = 0; i < N; i++){
		if(S[i] != i){
			for(int j = i + 1; j < N; j++){
				if(S[j] == i){
					P[cnt] = i;
					Q[cnt] = j;
					cnt++;
					swap(S[i], S[j]);
					break;
				}
			}	
		}
	}
	return cnt;
}

Compilation message (stderr)

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:38:39: warning: unused parameter 'M' [-Wunused-parameter]
   38 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                   ~~~~^
sorting.cpp:38:46: warning: unused parameter 'X' [-Wunused-parameter]
   38 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                          ~~~~^~~
sorting.cpp:38:55: warning: unused parameter 'Y' [-Wunused-parameter]
   38 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                                   ~~~~^~~

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