Submission #72916

#	Time	Username	Problem	Language	Result	Execution time	Memory
72916		nvmdava	Gondola (IOI14_gondola)	C++17	Compilation error	0 ms	0 KiB

gondola

//#include "gondola.h"
#include <bits/stdc++.h>
#define MOD 1000000009
using namespace std;
 
struct Gondola{
	int id, val;
	Gondola(int _id, int _val){
		id = _id;
		val = _val;
	}
	bool operator<(const Gondola& rhs) const{
		return val < rhs.val;
	}
};
 
int ord[100001];
map<int, int> in;
vector<Gondola> v;
 
 
int valid(int n, int inputSeq[]){
	int i;
	for(i = 0; i < n; i++){
		if(in[inputSeq[i]]) return 0;
		in[inputSeq[i]] = 1;
	}
	for(i = 0; i < n; i++){
		if(inputSeq[i] <= n) break;
	}
	if(i == n) return 1;
	int k = inputSeq[i] - 1;
	for(int j = 0; j < n; j++){
		ord[(k + j) % n] = inputSeq[(i + j) % n];
		if((ord[(k + j) % n] != (k + j) % n + 1 && ord[(k + j) % n] <= n) || ord[(k + j) % n] < 1) return 0;
	}
	for(i = 0; i < n; i++){
		if((ord[i] != i + 1 && ord[i] <= n) || ord[i] < 1) return 0;
	}
	return 1;
}
 
//----------------------
 
int replacement(int n, int gondolaSeq[], int replacementSeq[]){
	int i;
	for(i = 0; i < n; i++){
		if(gondolaSeq[i] <= n) break;
	}
	int k;
	if(i == n){
		i = 0;
		k = 0;
	} else {
		k = gondolaSeq[i] - 1;	
	}
	for(int j = 0; j < n; j++){
		v.push_back(Gondola((k + j) % n + 1, gondolaSeq[(i + j) % n]));
	}
	sort(v.begin(), v.end());
	i = 0;
	int s = n + 1;
	for(auto x : v){
		if(x.val <= n) continue;
		replacementSeq[i] = x.id;
		i++;
		for(; s < x.val; s++){
			replacementSeq[i] = s;
			i++;
		}
		s = x.val + 1;
	}
	return i;
}
 
//----------------------
long long pow(long long x, int p){
	long long s = 1;
	while(p > 0){
		if(p % 2 == 1){
			s *= x;
			s %= MOD;
		}
		x *= x;
		x %= MOD;
		p /= 2;
	}
	return s;
}

int countReplacement(int n, int gondolaSeq[]){
	int i;
	for(i = 0; i < n; i++){
		if(gondolaSeq[i] <= n) break;
	}
	bool in = 0;
	int k;
	if(i == n){
		i = 0;
		k = 0;
		in = 1;
	} else {
		k = gondolaSeq[i] - 1;	
	}
	for(int j = 0; j < n; j++){
		v.push_back(Gondola((k + j) % n + 1, gondolaSeq[(i + j) % n]));
	}
	sort(v.begin(), v.end());
	i = 0;
	long long ans = 1;
	int mx = n + 1, mlt = n + 1;
	
	for(auto x : v){
		mlt--;
		if(x.val < mx) continue;
		while(mx < x.val){
			ans = ans * mlt % MOD;	
			mx++;
		}
		mx = x.val + 1;
	}
	if(in){
		ans = ans * n % MOD;
		return ans;
	}
	return (int) ans;
}


int main(){
	int n;
	cin>>n;
	int a[1000], ans[1000];
	for(int i = 0; i < n; i++){
		cin>>a[i];
	}
	cout<< countReplacement(n, a);
}

Compilation message (stderr)

gondola.cpp: In function 'int main()':
gondola.cpp:133:15: warning: unused variable 'ans' [-Wunused-variable]
  int a[1000], ans[1000];
               ^~~
/tmp/ccd4gZnk.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cce79hgt.o:gondola.cpp:(.text.startup+0x0): first defined here
/tmp/ccd4gZnk.o: In function `main':
grader.cpp:(.text.startup+0xc3): undefined reference to `countReplacement'
grader.cpp:(.text.startup+0xe2): undefined reference to `valid'
grader.cpp:(.text.startup+0x106): undefined reference to `replacement'
collect2: error: ld returned 1 exit status