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Submission #136646

# Submission time Handle Problem Language Result Execution time Memory
136646 2019-07-26T00:38:22 Z vince Gondola (IOI14_gondola) C++14
100 / 100
 73 ms 6052 KB 
#include "gondola.h"
#include <set>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <vector>
#include <algorithm>
using namespace std;
 
int valid(int n, int inputSeq[])
{
    set<int> st;
    int num = -1;
    for(int i = 0; i < n; i++)
    {
        st.insert(inputSeq[i]);
        int idx = i%n;
        if(inputSeq[idx] <= n && num == -1)
            num = inputSeq[idx];
        
        if(inputSeq[idx] <= n & num != inputSeq[idx])
            return 0;
        
        if(num != -1)
        {
            num++;
            if(num == n+1)
                num -= n;
        }
    }
    return st.size() == n;
}
 
//----------------------
 
int A[500003];
int pos[500003];
int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
    memset(pos, -1, sizeof pos);
    int mx = 0;
    for(int i = 0; i < n; i++)
    {
        A[i] = gondolaSeq[i];
        mx = max(mx, A[i]);
        pos[A[i]] = i;
    }
    
    for(int i = 0; i < 3*n; i++)
    {
        if(A[(i-1+n)%n] <= n)
            A[i%n] = A[(i-1+n)%n]+1;
        
        if(A[i%n] == n+1) A[i%n] = 1;
    }
    if(A[0] > n)
    {
        for(int i = 0; i < n; i++)
        {
            A[i] = i+1;
        }
    }
    
//    for(int i = 0; i < n; i++)
//        printf("%d\n", A[i]);
    
    int sz = 0;
    for(int i = n+1; i <= mx; i++)
    {
//        printf("%d %d\n", i, pos[i]);
        if(pos[i] == -1)
        {
            if(gondolaSeq[pos[mx]]  == A[pos[mx]]) assert(0);
            replacementSeq[sz++] = A[pos[mx]];
            A[pos[mx]] = i;
            
        }
        else
        {
            if(gondolaSeq[pos[i]]  == A[pos[i]]) assert(0);
            replacementSeq[sz++] = A[pos[i]],
            A[pos[i]] = i;
        }
    }
    for(int i = 0; i < n; i++)
    {
        if(A[pos[gondolaSeq[i]]] < gondolaSeq[i])
            assert(0);
    }
 
    
    for(int i = 0; i < n; i++)
    {
//        if(A[i] != gondolaSeq[i])
//            printf("%d %d %d\n", i, A[i], gondolaSeq[i]);
    }
//    printf("\n");
    
    
    return sz;
}


 
//----------------------
 
const long long MOD = 1e9+9;
bool ada[500003];

long long pwr(long long a, long long b)
{
	if(b == 0) return 1;
	else if(b == 2) return (a*a)%MOD;
	else if(b&1) return (pwr(a,b-1)*a)%MOD;
	else return pwr(pwr(a,b/2), 2);
}

int countReplacement(int n, int inputSeq[])
{

    if(!valid(n, inputSeq))
        return 0;
    
    long long res = 1;
    long long hit = 0;
    int mx = 0;
    
    vector<long long> vec;
    for(int i = 0; i < n; i++)
    {
        if(inputSeq[i] > n) hit++;
        if(inputSeq[i] > n) vec.push_back(inputSeq[i]);
        
    }
    if(hit == n) res = n;

    sort(vec.begin(), vec.end());
    
    long long bef = n;
    for(int i = 0; i < vec.size(); i++)
    {
    	res = (res*pwr(hit,vec[i]-bef-1))%MOD;
    	hit--;
    	bef = vec[i];
    }
    
    return res;
}

Compilation message

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:21:26: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
         if(inputSeq[idx] <= n & num != inputSeq[idx])
            ~~~~~~~~~~~~~~^~~~
gondola.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     return st.size() == n;
            ~~~~~~~~~~^~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:140:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < vec.size(); i++)
                    ~~^~~~~~~~~~~~
gondola.cpp:126:9: warning: unused variable 'mx' [-Wunused-variable]
     int mx = 0;
         ^~

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 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 252 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 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 256 KB Output is correct
6 Correct 15 ms 2172 KB Output is correct
7 Correct 13 ms 632 KB Output is correct
8 Correct 28 ms 3960 KB Output is correct
9 Correct 10 ms 1528 KB Output is correct
10 Correct 34 ms 4600 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 376 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 380 KB Output is correct
6 Correct 16 ms 2296 KB Output is correct
7 Correct 13 ms 632 KB Output is correct
8 Correct 27 ms 3960 KB Output is correct
9 Correct 9 ms 1528 KB Output is correct
10 Correct 37 ms 4600 KB Output is correct
11 Correct 2 ms 380 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 7 ms 504 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 14 ms 636 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2296 KB Output is correct
2 Correct 4 ms 2296 KB Output is correct
3 Correct 4 ms 2300 KB Output is correct
4 Correct 4 ms 2296 KB Output is correct
5 Correct 3 ms 2296 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2340 KB Output is correct
2 Correct 4 ms 2296 KB Output is correct
3 Correct 3 ms 2296 KB Output is correct
4 Correct 3 ms 2296 KB Output is correct
5 Correct 3 ms 2296 KB Output is correct
6 Correct 3 ms 2296 KB Output is correct
7 Correct 4 ms 2296 KB Output is correct
8 Correct 4 ms 2296 KB Output is correct
9 Correct 4 ms 2300 KB Output is correct
10 Correct 4 ms 2296 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2296 KB Output is correct
2 Correct 3 ms 2296 KB Output is correct
3 Correct 3 ms 2296 KB Output is correct
4 Correct 3 ms 2296 KB Output is correct
5 Correct 4 ms 2296 KB Output is correct
6 Correct 4 ms 2300 KB Output is correct
7 Correct 3 ms 2296 KB Output is correct
8 Correct 4 ms 2296 KB Output is correct
9 Correct 4 ms 2296 KB Output is correct
10 Correct 4 ms 2296 KB Output is correct
11 Correct 15 ms 2936 KB Output is correct
12 Correct 18 ms 2936 KB Output is correct
13 Correct 17 ms 3320 KB Output is correct
14 Correct 16 ms 2808 KB Output is correct
15 Correct 24 ms 4072 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 252 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 256 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 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 256 KB Output is correct

Subtask #9
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 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 47 ms 4504 KB Output is correct
10 Correct 37 ms 3832 KB Output is correct
11 Correct 15 ms 1528 KB Output is correct
12 Correct 18 ms 1912 KB Output is correct
13 Correct 5 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 256 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 380 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 296 KB Output is correct
9 Correct 47 ms 4472 KB Output is correct
10 Correct 38 ms 3832 KB Output is correct
11 Correct 15 ms 1528 KB Output is correct
12 Correct 18 ms 1912 KB Output is correct
13 Correct 5 ms 732 KB Output is correct
14 Correct 61 ms 5368 KB Output is correct
15 Correct 73 ms 6052 KB Output is correct
16 Correct 12 ms 1400 KB Output is correct
17 Correct 45 ms 4132 KB Output is correct
18 Correct 25 ms 2552 KB Output is correct