Submission #163473

#	Time	Username	Problem	Language	Result	Execution time	Memory
163473		ioane	Gondola (IOI14_gondola)	C++14	25 / 100	16 ms	1400 KiB

gondola

#include "gondola.h"/**/
#include <bits/stdc++.h>
#define LL long long
#define PB push_back
#define FOR(i,n) for (int i = 0; i < (n); i++)

const LL N = 100005, NR = 250005;

using namespace std;

LL m, i, j, k, l, r, t;
LL a[N], fox[NR], b[N];
bool fix[NR];

int valid(int n, int inputSeq[]){
	t = NR;
	for ( i = 1; i <= n; ++i ){
		if ( fix[inputSeq[i-1]] ) return 0;
		//cout << inputSeq[i-1] << " " << fix[inputSeq[i-1]] << endl;
		fix[inputSeq[i-1]] = 1;
		if ( inputSeq[i-1] <= n ){
			t = inputSeq[i-1] - i;
		}
	}
	if ( t == NR ) return 1;
	for ( i = 1; i <= n; ++i ){
		j = i + t;
		while ( j < 1 ) j += n;
		while ( j > n ) j -= n;
		a[j] = inputSeq[i-1];
	}
	for ( i = 1; i <= n; ++i ){
		if ( a[i] <= n && a[i] != i ) return 0;
	}
	return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[]){
	valid(n, gondolaSeq);
	t = 0;
	for ( i = 1; i <= n; ++i ){
		fox[a[i]] = i;
		if ( t < a[i] ){
			t = a[i];
		}
		b[i] = i;
	}
	for ( i = n + 1; i <= t; ++i ){
		if ( !fox[a[i]] ){
			replacementSeq[i - n - 1] = b[fox[t]];
			b[fox[t]] = i;
		}
		else{
			replacementSeq[i - n - 1] = b[fox[i]];
			b[fox[i]] = i;
		} 
		m++;
	}
	return m;
}

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

int countReplacement(int n, int inputSeq[])
{
  return -3;
}


/*/



int gondolaSequence[100001];
int replacementSequence[250001];

int main()
{
  int i, n, tag;
  int nr; 
  assert(scanf("%d", &tag)==1);
  assert(scanf("%d", &n)==1);
  for(i=0;i< n;i++)
    assert( scanf("%d", &gondolaSequence[i]) ==1);
  
  switch (tag){
  case 1: case 2: case 3:
    printf("%d\n", valid(n, gondolaSequence));
    break;

  case 4: case 5: case 6:
    nr = replacement(n, gondolaSequence, replacementSequence);
    printf("%d ", nr);
    if (nr > 0)
      {
	for (i=0; i<nr-1; i++)
	  printf("%d ", replacementSequence[i]);
	printf("%d\n", replacementSequence[nr-1]);
      }  
    else printf("\n");
    break;

  case 7: case 8: case 9: case 10:
    printf("%d\n",  countReplacement(n, gondolaSequence));  
    break;
  }

  return 0;
}
/**/

Compilation message (stderr)

gondola.cpp:112:1: warning: "/*" within comment [-Wcomment]
 /**/

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