oj.uz

Submission #426014

# Submission time Handle Problem Language Result Execution time Memory
426014 2021-06-13T12:59:34 Z _fractal Sorting (IOI15_sorting) C++14
20 / 100
 131 ms 412 KB 
#include "sorting.h"
#include <cassert>
#include <iostream>
#include <algorithm>
using namespace std;


int findSwapPairs(int N, int SS[], int M, int X[], int Y[], int P[], int Q[]) {
	int A[N], pos[N], S[N];
	while (true) {
		bool F = 1;
		for (int i = 0; i < N; ++i)
			A[i] = i, S[i] = SS[i];
		for (int i = M - 1; i >= 0; --i)
			swap(A[X[i]], A[Y[i]]);
		int r = 0;
		for (int i = 0; i < M; ++i) {
			swap(S[X[i]], S[Y[i]]);
			swap(A[X[i]], A[Y[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;
				}
			}
			swap(S[Q[i]], S[P[i]]);
			bool f = 1;
			for (int i = 1; i < N; ++i)
				if (S[i - 1] > S[i])
					f = 0;
			if (f && i + 1 != M) {
				F = 0;
				break;
			}
		}
		if (F) {
			return r;
		}
		--M;
	}
}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:31:13: warning: declaration of 'i' shadows a previous local [-Wshadow]
   31 |    for (int i = 1; i < N; ++i)
      |             ^
sorting.cpp:17:12: note: shadowed declaration is here
   17 |   for (int i = 0; i < M; ++i) {
      |            ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 131 ms 312 KB Output is correct
11 Correct 124 ms 308 KB Output is correct
12 Correct 121 ms 308 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 292 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 131 ms 312 KB Output is correct
11 Correct 124 ms 308 KB Output is correct
12 Correct 121 ms 308 KB Output is correct
13 Incorrect 1 ms 292 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 55 ms 412 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Incorrect 55 ms 412 KB Output isn't correct
2 Halted 0 ms 0 KB -