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Submission #129468

# Submission time Handle Problem Language Result Execution time Memory
129468 2019-07-12T09:33:17 Z antimirage Gondola (IOI14_gondola) C++14
60 / 100
 26 ms 6132 KB 
#include "gondola.h"
//#include "grader.cpp"
#include <bits/stdc++.h>

using namespace std;

const int N = 1e6 + 5;

int b[N], ind[N], mx, sz, cnt[N], mod = 1e9 + 9;

int valid(int n, int a[]) {
	int pos = -1;
	
	for (int i = 0; i < n; i++) {
		if (a[i] <= n) {
			pos = i;
		}
		cnt[a[i]]++;
		
		if (cnt[a[i]] > 1)
			return 0;
	}
	if (pos == -1) {
		return 1;
	} else {
		assert(a[pos] <= n);
		int cn = a[pos];
		for (int i = (pos + 1) % n; i != pos; i = (i + 1) % n) {
			cn++;
			if (cn > n)
				cn -= n;
			if (a[i] > n) {
				continue;
			}
			if (a[i] != cn) {
				return 0;
			}
		}
	}
	return 1;
}
int replacement(int n, int a[], int ans[]) {
	memset(ind, -1, sizeof(ind));
	int pos = -1;
	
	for (int i = 0; i < n; i++) {
		if (a[i] <= n) {
			pos = i;
		}
		if (a[i] > a[mx]) {
			mx = i;
		}
		ind[a[i]] = i;
	}
	if (pos == -1) {
		for (int i = 0; i < n; i++) {
			b[i] = i + 1;
		}
	}
	else {
		int cn = a[pos];
		b[pos] = a[pos];
		for (int i = (pos + 1) % n; i != pos; i = (i + 1) % n) {
			cn++;
			if (cn > n)
				cn -= n;
			b[i] = cn;
		}
	}
	for (int i = n + 1; i <= a[mx]; i++) {
		if (ind[i] == -1) {
			ans[sz++] = b[mx];
			b[mx] = i;
		}
		else {
			ans[sz++] = b[ind[i]];
			b[ind[i]] = i;
		}
	}
	return sz;
}

int countReplacement(int n, int a[]) {
	if (valid(n, a) == 0)
		return 0;
		
	int pos = -1;
	
	long long res = 1, val = 1;
	
	for (int i = 0; i < n; i++) {
		if (a[i] <= n) {
			pos = i;
		}
		ind[a[i]] = i;
	}
	if (pos == -1) {
		for (int i = 0; i < n; i++) {
			b[i] = i + 1;
			res *= (i + 1);
			res %= mod;
		}
	} else {
		int cn = a[pos];
		b[pos] = a[pos];
		for (int i = (pos + 1) % n; i != pos; i = (i + 1) % n) {
			cn++;
			if (cn > n)
				cn -= n;
			b[i] = cn;
		}
		sort(a, a + n);
		int j = 0;
		for (int i = n + 1; i <= a[n - 1]; i++) {
			while (a[j] < i)
				j++;
			if (ind[i] == -1) {
				res *= (n - j);
				res %= mod;
			}
		}
	}
	return res;
}

Compilation message

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:89:21: warning: unused variable 'val' [-Wunused-variable]
  long long res = 1, val = 1;
                     ^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 7 ms 632 KB Output is correct
7 Correct 13 ms 1016 KB Output is correct
8 Correct 12 ms 860 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 13 ms 1016 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 7 ms 636 KB Output is correct
7 Correct 14 ms 1016 KB Output is correct
8 Correct 12 ms 892 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 13 ms 1016 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 10 ms 1272 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 15 ms 1144 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4216 KB Output is correct
2 Correct 5 ms 4216 KB Output is correct
3 Correct 5 ms 4296 KB Output is correct
4 Correct 5 ms 4216 KB Output is correct
5 Correct 5 ms 4216 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4216 KB Output is correct
2 Correct 5 ms 4216 KB Output is correct
3 Correct 5 ms 4216 KB Output is correct
4 Correct 7 ms 4216 KB Output is correct
5 Correct 5 ms 4216 KB Output is correct
6 Correct 5 ms 4216 KB Output is correct
7 Correct 5 ms 4216 KB Output is correct
8 Correct 7 ms 4344 KB Output is correct
9 Correct 6 ms 4216 KB Output is correct
10 Correct 6 ms 4344 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4216 KB Output is correct
2 Correct 5 ms 4216 KB Output is correct
3 Correct 5 ms 4216 KB Output is correct
4 Correct 5 ms 4216 KB Output is correct
5 Correct 5 ms 4216 KB Output is correct
6 Correct 5 ms 4216 KB Output is correct
7 Correct 5 ms 4216 KB Output is correct
8 Correct 6 ms 4348 KB Output is correct
9 Correct 6 ms 4344 KB Output is correct
10 Correct 6 ms 4216 KB Output is correct
11 Correct 16 ms 4856 KB Output is correct
12 Correct 17 ms 4984 KB Output is correct
13 Correct 18 ms 5240 KB Output is correct
14 Correct 16 ms 4856 KB Output is correct
15 Correct 26 ms 6132 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 348 KB Output is correct

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Incorrect 2 ms 376 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #9
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Incorrect 2 ms 376 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Incorrect 2 ms 376 KB Output isn't correct
6 Halted 0 ms 0 KB -