Submission #30330

#	Time	Username	Problem	Language	Result	Execution time	Memory
30330		ozaslan	Gondola (IOI14_gondola)	C++14	40 / 100	19 ms	3888 KiB

gondola

#include "gondola.h"
#include <vector>
#include <algorithm>
#define MOD 1000000009
using namespace std;

int valid(int n, int inputSeq[])
{
	int bas = -1;
	for (int i = 0; i < n; i++)
		if(inputSeq[i] <= n) {
			bas = i;
			break;
		}

	int s = bas == -1 ? 1 : inputSeq[bas];
	bas = bas == -1 ? 0 : bas;

 	int bayrak = 1;
	for (int i = bas; i < n; i++, s++) {
        if(s == n+1) s = 1;
		if(inputSeq[i] != s && inputSeq[i] <= n) {
			bayrak = 0;
			break;
		}
	}

	for (int i = 0; i < bas; i++, s++) {
        if(s == n+1) s = 1;
		if(inputSeq[i] != s && inputSeq[i] <= n) {
			bayrak = 0;
			break;
		}
	}

    if(!bayrak) return 0;

    vector<int> v (inputSeq, inputSeq+n);
    sort(v.begin(), v.end());

    for(int i = 1; i < n; i++)
    	if(v[i] == v[i-1]) {
    		bayrak = 0;
    		break;
    	}

	return bayrak;
}

//----------------------

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
  return -2;
}

//----------------------

long long us(long long a, long long b) {
    if(b == 0) return 1;
	if(b == 1) return a;
	if(b & 1) return (us(a, b>>1) * us(a, b>>1) * a) % MOD;
	return (us(a, b>>1) * us(a, b>>1)) % MOD;
}


int countReplacement(int n, int inputSeq[])
{
//    printf("%lld, %lld, %lld\n", us(2, 5), us(5, 3), us(10, 10));
  /*  for(int i = 0; i < n; i++)
        printf("%d ", inputSeq[i]);
    printf("\n");
*/
    if( !valid(n, inputSeq) ) return 0;

	vector<int> v;

	for (int i = 0; i < n; i++)
		if (inputSeq[i] > n) v.push_back(inputSeq[i]);

	sort(v.begin(), v.end());

  /*  for(int i = 0; i < v.size(); i++)
        printf("%d ", v[i]);
    printf("\n");
*/

	long long sonuc = 1;

	if (v.size() == n) sonuc = n;

	int onceki = n;
	for(int i = 0; i < v.size(); i++) {
		sonuc *= us(v.size()-i, v[i]-onceki-1);
		sonuc %= MOD;
		onceki = v[i];
	}

	return sonuc % MOD;
}

Compilation message (stderr)

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:90:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (v.size() == n) sonuc = n;
               ^
gondola.cpp:93:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < v.size(); i++) {
                   ^

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 0 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 20
• Subtask 7: 5 / 5
• Subtask 8: 15 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10