Submission #1325904

#	Time	Username	Problem	Language	Result	Execution time	Memory
1325904		crispxx	Gondola (IOI14_gondola)	C++20	25 / 100	31 ms	4736 KiB

gondola

#include "gondola.h"

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

int valid(int n, int s[]) {
	set<int> st(s, s + n);
	
	if( (int)st.size() != n ) return false;
	
	st.clear();
	
	for(int i = 0; i < n; i++) {
		s[i]--;
		
		if(s[i] < n) {
			st.emplace((i - s[i] + n) % n);
		}
	}
	
	return (int)st.size() <= 1;
}

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

int replacement(int n, int s[], int r[]) {
	int mx = 0;
	
	for(int i = 0; i < n; i++) {
		mx = max(mx, s[i]);
	}
	
	set<int> st;
	
	for(int i = 1; i <= mx; i++) {
		st.emplace(i);
	}
	
	for(int i = 0; i < n; i++) {
		st.erase(s[i]);
	}
	
	int l = 0;
	
	for(auto &x : st) {
		r[l++] = x;
	}
	
	return l;
}

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

int countReplacement(int n, int s[]) {
	return -2;
}

• 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