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Submission #165380

# Submission time Handle Problem Language Result Execution time Memory
165380 2019-11-26T16:54:00 Z cfalas Gondola (IOI14_gondola) C++14
100 / 100
 97 ms 8124 KB 
#include "gondola.h"
#include<bits/stdc++.h>
using namespace std;
#define MOD 1000000009
#define ll long long

int valid(int n, int a[]){
	map<int, bool> used;
	for(int i=0;i<n;i++){
		if(used[a[i]]) return 0;
		used[a[i]] = true;

	}
	int s = 0;
	for(int i=0;i<n;i++){
		if(a[i]<=n){
			s = i;
			break;
		}
	}

	for(int i=0;i<n;i++){
		if(a[i]<=n && (a[i]+(s-i) - 1 + n)%n + 1 != a[s]) return 0; }
	return 1;
}

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

int replacement(int n, int a[], int ans[]){
	int apos=-1, av;
	int maxf=0;
	int minf = 0;
	unordered_map<int, int> m;
	for(int i=0;i<n;i++){
		if(a[i]<=n) apos = i, av=a[i];
		else m[a[i]] = i+1;
		maxf = max(maxf, a[i]);
		if(a[minf]>a[i]) minf = i;
	}
	if(apos==-1){
		apos = minf;
		av = 1;
	}
	queue<int> q;
	int l=0;
	for(int i=n+1;i<=maxf;i++){
		if(m[i]){
			int c = l - 1;
			ans[l] = (n + av - (apos - m[i] + 1) - 1) % n + l - c;
			l++;
			//cout<<apos<<" "<<m[i]<<" "<<av<<endl;

			while(!q.empty()){
				ans[l] = q.front();
				q.pop();
				l++;
			}
		}
		else q.push(i);
	}
	return l;
}

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

ll mpow(ll a, ll b){
	if(b==0) return 1;
	if(b==1) return a;
	ll z = mpow(a, b/2);
	z*=z;
	z%=MOD;
	if(b%2) z*=a;
	z%=MOD;
	return z;
}

int countReplacement(int n, int a[]){
	if(!valid(n, a)) return 0;
	int act=-1;
	int un=0;
	for(int i=0;i<n;i++){
		if(a[i]<=n)	act = i;
		else un++;
	}
	sort(a, a+n);
	ll ans=1;
	if(act==-1) ans*=n;
	ll prev = n+1;
	for(int i=0;i<n-1 && un>=1;i++){
		if(a[i]<=n) continue;
		//cout<<un<<" "<<mpow(un, a[i+1]-a[i]-1)<<" "<<a[i]<<" "<<a[i+1]<<endl;
		ans *= mpow(un, a[i]-prev);
		ans%=MOD;
		prev = a[i]+1;
		un--;
	}
	return ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 21 ms 2428 KB Output is correct
7 Correct 14 ms 632 KB Output is correct
8 Correct 36 ms 4344 KB Output is correct
9 Correct 13 ms 1656 KB Output is correct
10 Correct 51 ms 4984 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 424 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 24 ms 2424 KB Output is correct
7 Correct 15 ms 1272 KB Output is correct
8 Correct 36 ms 4344 KB Output is correct
9 Correct 13 ms 1660 KB Output is correct
10 Correct 52 ms 5108 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 26 ms 2132 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 68 ms 5240 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 404 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 380 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 3 ms 504 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 252 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 3 ms 632 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 12 ms 888 KB Output is correct
12 Correct 13 ms 1144 KB Output is correct
13 Correct 31 ms 4100 KB Output is correct
14 Correct 12 ms 1020 KB Output is correct
15 Correct 55 ms 8124 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 252 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 64 ms 4668 KB Output is correct
10 Correct 49 ms 3832 KB Output is correct
11 Correct 18 ms 1656 KB Output is correct
12 Correct 22 ms 1912 KB Output is correct
13 Correct 6 ms 632 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 60 ms 4472 KB Output is correct
10 Correct 47 ms 3832 KB Output is correct
11 Correct 18 ms 1656 KB Output is correct
12 Correct 22 ms 1884 KB Output is correct
13 Correct 6 ms 760 KB Output is correct
14 Correct 76 ms 5368 KB Output is correct
15 Correct 97 ms 6008 KB Output is correct
16 Correct 14 ms 1400 KB Output is correct
17 Correct 57 ms 4156 KB Output is correct
18 Correct 31 ms 2556 KB Output is correct