Submission #921621

#	Time	Username	Problem	Language	Result	Execution time	Memory
921621		Nika533	Gondola (IOI14_gondola)	C++17	60 / 100	28 ms	5164 KiB

gondola

#pragma GCC diagnostic warning "-std=c++11"
#include <bits/stdc++.h>
#include "gondola.h"
#define pb push_back
#define f first
#define s second
#define MOD 1000000007
#define flush fflush(stdout)
#define all(x) (x).begin(),(x).end()
#define allr(x) (x).rbegin(), (x).rend()
#define pii pair<int,int>
using namespace std;

int valid(int n, int inputSeq[])
{
	int ind=-1;
	map<int,int> mymap;
	for (int i=0; i<n; i++) {
		mymap[inputSeq[i]]++;
		if (inputSeq[i]<=n) ind=i;
	}
	for (auto x:mymap) {
		if (x.s>1) return 0;
	}
	if (ind==-1) return 1;
	for (int i=ind+1; i<n+ind; i++) {
		int num=inputSeq[((i-1)%n)]+1;
		if (num==n+1) num=1;
		if (inputSeq[(i%n)]>n) {
			inputSeq[(i%n)]=num;
		}
		else {
			if (inputSeq[(i%n)]!=num) return 0;
		}
	}
	return 1;
}

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
	int mx=0;
	vector<pii> v;
	int j=0,diff=0;
	for (int i=0; i<n; i++) {
		if (gondolaSeq[i]<=n) {
			diff=(i+n-gondolaSeq[i])%n;
		}
	}
	for (int i=0; i<n; i++) {
		int val;
		if (diff>=i) val=diff-i;
		else val=diff+n-i;
		val=n-val;
		if (gondolaSeq[i]>n) v.pb({gondolaSeq[i],val});
	}
	int ind=0,cur=n+1;
	sort(all(v));
	for (int j=0; j<v.size(); j++) {
		replacementSeq[ind]=v[j].s; ind++;
		for (int o=cur; o<v[j].f; o++) {
			replacementSeq[ind]=o; ind++;
		}
		cur=v[j].f+1;
	} 
	return ind;
}

int countReplacement(int n, int inputSeq[])
{
	int arr[n];
	for (int i=0; i<n; i++) arr[i]=inputSeq[i];
  if (!valid(n,arr)) return 0;
  int mx=0,mn=1e9;
	vector<int> v;
  for (int i=0; i<n; i++) {
  		mx=max(mx,inputSeq[i]);
  		mn=min(mn,inputSeq[i]);
		if (inputSeq[i]>n) {
			v.pb(inputSeq[i]);
		}
  }
  long long ans=1;
  if (mn>n) {
  	ans=n;
  }
  int cur=n,val=v.size();
  sort(all(v));
  for (int j=0; j<v.size(); j++) {
  		int p=v[j]-cur-1;
  		while (p--) {
  			ans*=val;
  			ans%=MOD;
		}
  		cur=v[j]; val--;
  }
  int ans2=ans;
  return ans2;
}

Compilation message (stderr)

gondola.cpp:1:32: warning: '-std=c++11' is not an option that controls warnings [-Wpragmas]
    1 | #pragma GCC diagnostic warning "-std=c++11"
      |                                ^~~~~~~~~~~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:58:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |  for (int j=0; j<v.size(); j++) {
      |                ~^~~~~~~~~
gondola.cpp:41:6: warning: unused variable 'mx' [-Wunused-variable]
   41 |  int mx=0;
      |      ^~
gondola.cpp:43:6: warning: unused variable 'j' [-Wunused-variable]
   43 |  int j=0,diff=0;
      |      ^
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:88:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |   for (int j=0; j<v.size(); j++) {
      |                 ~^~~~~~~~~

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