oj.uz

Submission #426099

# Submission time Handle Problem Language Result Execution time Memory
426099 2021-06-13T13:59:01 Z _fractal Sorting (IOI15_sorting) C++14
74 / 100
 1000 ms 19008 KB 
#include "sorting.h"
#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], L[M], R[M], ret = (1<<30), S[N];
	int tl = 0, tr = M - 1;
	while (tl <= tr) {
		int m = tl + tr >> 1;
		for (int i = 0; i < N; ++i)
			A[i] = i, S[i] = SS[i];
		for (int i = m; i >= 0; --i)
			swap(A[X[i]], A[Y[i]]);
		int r = -1;
		for (int i = 0; i <= m; ++i) {
			P[i] = Q[i] = 0;
			bool f = 1;
			for (int j = 1; j < N; ++j)
				if (S[j - 1] > S[j])
					f = 0;
			if (f) {
				r = i;
				break;
			}
			swap(S[X[i]], S[Y[i]]);
			swap(A[X[i]], A[Y[i]]);
			f = 1;
			for (int j = 1; j < N; ++j)
				if (S[j - 1] > S[j])
					f = 0;
			if (f) {
				r = i + 1;
				break;
			}
			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]];
					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) {
			tl = m + 1;
			continue;
		}
		tr = m - 1;
		if (r == -1) r = m + 1;
		if (ret >= r) {
			ret = r;
			for (int i = 0; i < r; ++i)
				L[i] = Q[i], R[i] = P[i];
		}
	}
	for (int i = 0; i < ret; ++i)
		Q[i] = L[i], P[i]= R[i];
	return ret;
}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:11:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   11 |   int m = tl + tr >> 1;
      |           ~~~^~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 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 204 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 204 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 204 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 1 ms 332 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 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 204 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 1 ms 332 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 47 ms 668 KB Output is correct
22 Correct 47 ms 588 KB Output is correct
23 Correct 49 ms 700 KB Output is correct
24 Correct 44 ms 672 KB Output is correct
25 Correct 49 ms 760 KB Output is correct
26 Correct 46 ms 588 KB Output is correct
27 Correct 48 ms 684 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 191 ms 412 KB Output is correct
2 Correct 209 ms 476 KB Output is correct
3 Correct 213 ms 464 KB Output is correct
4 Correct 2 ms 460 KB Output is correct
5 Correct 64 ms 496 KB Output is correct
6 Correct 84 ms 488 KB Output is correct
7 Correct 149 ms 500 KB Output is correct
8 Correct 211 ms 484 KB Output is correct
9 Correct 210 ms 488 KB Output is correct
10 Correct 226 ms 480 KB Output is correct
11 Correct 223 ms 488 KB Output is correct
12 Correct 148 ms 460 KB Output is correct
13 Correct 228 ms 480 KB Output is correct
14 Correct 5 ms 460 KB Output is correct

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 191 ms 412 KB Output is correct
2 Correct 209 ms 476 KB Output is correct
3 Correct 213 ms 464 KB Output is correct
4 Correct 2 ms 460 KB Output is correct
5 Correct 64 ms 496 KB Output is correct
6 Correct 84 ms 488 KB Output is correct
7 Correct 149 ms 500 KB Output is correct
8 Correct 211 ms 484 KB Output is correct
9 Correct 210 ms 488 KB Output is correct
10 Correct 226 ms 480 KB Output is correct
11 Correct 223 ms 488 KB Output is correct
12 Correct 148 ms 460 KB Output is correct
13 Correct 228 ms 480 KB Output is correct
14 Correct 5 ms 460 KB Output is correct
15 Execution timed out 1087 ms 19008 KB Time limit exceeded
16 Halted 0 ms 0 KB -