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Submission #99726

# Submission time Handle Problem Language Result Execution time Memory
99726 2019-03-06T10:07:10 Z Retro3014 Gondola (IOI14_gondola) C++17
55 / 100
 1000 ms 5240 KB 
#include "gondola.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int MAX_X = 250000;

set<int> st;

int valid(int n, int inputSeq[]){
	int s = -1;
	for(int i=0; i<n; i++){
		if(st.find(inputSeq[i])!=st.end())	return false;
		st.insert(inputSeq[i]);
	}
	for(int i=0; i<n; i++){
		if(inputSeq[i]<=n){
			s = i; break;
		}
	}
	if(s==-1)	return 1;
	int idx = s, now = inputSeq[idx];
	bool tf = true;
	while(1){
		if(inputSeq[idx]<=n && inputSeq[idx]!=now){
			tf = false;
			break;
		}
		if(idx==(s+n-2)%n+1)	break;
		now = now%n+1; idx = (idx+1)%n;
	}
	if(tf)	return 1;
	tf = true;
	idx = s; now = inputSeq[idx];
	while(1){
		if(inputSeq[idx]<=n &&inputSeq[idx]!=now){
			tf = false;
			break;
		}
		if(idx==s%n+1)	break;
		idx = (idx+n-1)%n; now = (now+n-2)%n+1;
	}
	if(tf)	return 1;
	return 0;
}

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

int loc[MAX_X+1];
int num[MAX_X+1];

int replacement(int n, int gondolaSeq[], int replacementSeq[]){
	int mx = 0;
	for(int i=0; i<n; i++) mx = max(mx, gondolaSeq[i]);
	for(int i=1; i<=mx; i++)	loc[i] = -1;
	for(int i=0; i<n; i++)	loc[gondolaSeq[i]] = i;
	int s = -1;
	for(int i=0; i<n; i++){
		if(gondolaSeq[i]<=n){
			s = i; break;
		}
	}
	if(s==-1){
		for(int i=0; i<n; i++){
			num[i] = i+1;
		}
	}
	else{
		bool tf = true;
		int idx = s, now = gondolaSeq[idx];
		while(1){
			if(gondolaSeq[idx]<=n && gondolaSeq[idx]!=now){
				tf = false; break;
			}
			idx = idx%n+1; now = now%n+1;
			if(idx==s)	break;
		}
		if(tf){
			idx = s; now = gondolaSeq[idx];
			while(1){
				num[idx] = now;
				idx = (idx+1)%n; now = now%n+1;
				if(idx==s)	break;
			}
		}else{
			idx = s; now = gondolaSeq[idx];
			while(1){
				num[idx] = now;
				idx = (idx+n-1)%n; now = (now+n-2)%n+1;
				if(idx==s)	break;
			}
		}
	}
	int idx = 0;
	int cnt = 0;
	for(int i=n+1; i<=mx; i++){
		if(loc[i]!=-1){
			replacementSeq[cnt++] = num[loc[i]];
			num[loc[i]] = i;
		}else{
			while(gondolaSeq[idx]==num[idx])	idx++;
			replacementSeq[cnt++] = num[idx];
			num[idx] = i;
		}
	}
	return cnt;
}

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

const ll DIV = 1000000009;

ll multi(ll x, ll y){
	if(y==1)	return x%DIV;
	if(y==0)	return 1;
	ll m = multi(x, y/2);
	if(y%2==1)	return (((m*m)%DIV)*x)%DIV;
	return ((m*m)%DIV);
}



vector<int> v;

int countReplacement(int n, int inputSeq[]){
	if(!valid(n, inputSeq))	return 0;
	int mx = 0;
	for(int i=0; i<n; i++) mx = max(mx, inputSeq[i]);
	for(int i=0; i<n; i++){
		v.push_back(inputSeq[i]);
	}sort(v.begin(), v.end());
	bool tf = false;
	for(int i=0; i<n; i++){
		if(inputSeq[i]<=n){
			tf = true; break;
		}
	}
	ll ans = 1;
	if(!tf)	ans = n;
	int prv = n+1;
	ll t = n;
	for(int i=0; i<v.size(); i++){
		if(v[i]<=n)	{
			t--;
			continue;
		}
		ans = (ans * multi(t, v[i]-prv))%DIV;
		t--;
		prv = v[i]+1;
	}
	return ans;
}

Compilation message

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:144:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<v.size(); i++){
               ~^~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 356 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 18 ms 2432 KB Output is correct
7 Correct 14 ms 1152 KB Output is correct
8 Correct 32 ms 4388 KB Output is correct
9 Correct 11 ms 1536 KB Output is correct
10 Correct 41 ms 4984 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 19 ms 2432 KB Output is correct
7 Correct 13 ms 1152 KB Output is correct
8 Correct 33 ms 4308 KB Output is correct
9 Correct 11 ms 1664 KB Output is correct
10 Correct 48 ms 4984 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 25 ms 2424 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 71 ms 5240 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 22 ms 1656 KB Output is correct
12 Correct 16 ms 1920 KB Output is correct
13 Correct 20 ms 1920 KB Output is correct
14 Correct 15 ms 1792 KB Output is correct
15 Correct 29 ms 3064 KB Output is correct

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Execution timed out 1086 ms 384 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Execution timed out 1072 ms 384 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #9
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Execution timed out 1073 ms 384 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Execution timed out 1081 ms 384 KB Time limit exceeded
3 Halted 0 ms 0 KB -