oj.uz

Submission #238685

# Submission time Handle Problem Language Result Execution time Memory
238685 2020-06-12T11:00:24 Z Ruxandra985 Gondola (IOI14_gondola) C++14
100 / 100
 125 ms 10104 KB 
#include <bits/stdc++.h>
#include "gondola.h"
#define MOD 1000000009
using namespace std;

int init[250010];
map <int,int> f;
pair <int,int> w[250010];

int valid(int n, int v[]){

    int i , found , poz , ok , pin , fi , space;
    found = -1;
    poz = 0;
    ok = 0;

    for (i = 0 ; i < n ; i++)
        v[i]--;

    for (i = 0 ; i < n ; i++){

        if (f[v[i]])
            return 0;

        f[v[i]] = 1;

        if (v[i] < n){

            if (found == -1){
                found = v[i];
                poz = i;
                pin = i;
                fi = v[i];
            }
            else {
                if (found > v[i]){

                    if (ok == 1)
                        return 0;
                    ok = 1;

                    space = n - 1 - found + v[i];

                    if (space != i - poz - 1)
                        return 0;

                    found = v[i];
                    poz = i;

                }
                else {

                    space = v[i] - found - 1;

                    if (space != i - poz - 1)
                        return 0;




                    found = v[i];
                    poz = i;
                }
            }

        }


    }

    /// verif cu ult poz si prima poz

    if (found == -1)
        return 1;


    if (found > fi){

        if (ok == 1)
            return 0;
        ok = 1;

        space = n - 1 - found + fi;

        if (space != (n - 1) - poz + pin)
            return 0;


    }
    else {

        if (!ok)
            return 0;

        space = fi - found - 1;

        if (space != (n - 1) - poz + pin)
            return 0;

    }


    return 1;
}

/// prima parte e ok


int replacement(int n, int v[], int w[]){
    int found , maxi , p , i , len;
    found = 0;

    maxi = 0;
    p = 0;

    for (i = 0 ; i < n ; i++){

        f[v[i]] = i + 1;

        if (v[i] > maxi){
            maxi = v[i];
            p = i;
        }

        if (v[i] <= n){
            found = v[i];
        }
        if (found){
            init[i] = found;

            found++;
            if (found == n + 1)
                found = 1;
        }
    }

    if (!found) /// nu ai gasit pana acum, iei o secventa random
        found = 1;

    for (i = 0 ; i < n && init[i] == 0 ; i++){

        init[i] = found;
        found++;
        if (found == n + 1)
            found = 1;

    }

    len = 0;
    for (i = n + 1 ; i <= maxi ; i++){

        if (f[i]){ /// am nevoie de i
            w[len] = init[ f[i] - 1 ];

            init[f[i] - 1] = i;
        }
        else {
            w[len] = init[p];
            init[p] = i;
        }

        len++;
    }
    return len;

}

/// a doua parte e ok


int ridput (int x , int y){
    long long sol = 1;

    while (y){

        if (y % 2)
            sol = (1LL * sol * x)%MOD;

        x = (1LL * x * x)%MOD;

        y /= 2;
    }
    return sol;


}


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

    int is_ok , i , places , elem;
    long long sol;

    is_ok = valid (n , v);
    if (!is_ok)
        return 0;

    places = n;
    elem = 0;
    sol = 1;

    for (i = 0 ; i < n ; i++){

        v[i]++;

        f[v[i]] = i + 1;

        if (v[i] <= n)
            places--;
        else w[++elem] = make_pair (v[i] , i);
    }

    sort (w + 1 , w + elem + 1);

    w[0].first = n;

    for (i = 1 ; i <= elem ; i++){
        sol = (1LL * sol * ridput(places , w[i].first - w[i - 1].first - 1))%MOD;
        places--;
    }

    if (elem == n)
        sol = (1LL * sol * n)%MOD;

    return sol;
}

Compilation message

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:83:15: warning: 'fi' may be used uninitialized in this function [-Wmaybe-uninitialized]
         space = n - 1 - found + fi;
         ~~~~~~^~~~~~~~~~~~~~~~~~~~
gondola.cpp:97:36: warning: 'pin' may be used uninitialized in this function [-Wmaybe-uninitialized]
         if (space != (n - 1) - poz + pin)
                      ~~~~~~~~~~~~~~^~~~~

Subtask #1
5.0 / 5.0

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

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 19 ms 2304 KB Output is correct
7 Correct 17 ms 768 KB Output is correct
8 Correct 33 ms 3960 KB Output is correct
9 Correct 13 ms 1536 KB Output is correct
10 Correct 38 ms 4520 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 19 ms 2304 KB Output is correct
7 Correct 20 ms 640 KB Output is correct
8 Correct 33 ms 3968 KB Output is correct
9 Correct 12 ms 1536 KB Output is correct
10 Correct 39 ms 4600 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 10 ms 512 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 17 ms 640 KB Output is correct

Subtask #4
5.0 / 5.0

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

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 6 ms 640 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 6 ms 640 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 6 ms 640 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 6 ms 640 KB Output is correct
11 Correct 31 ms 4600 KB Output is correct
12 Correct 35 ms 5240 KB Output is correct
13 Correct 43 ms 4832 KB Output is correct
14 Correct 31 ms 4600 KB Output is correct
15 Correct 65 ms 10104 KB Output is correct

Subtask #7
5.0 / 5.0

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

Subtask #8
15.0 / 15.0

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

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 72 ms 6136 KB Output is correct
10 Correct 61 ms 5112 KB Output is correct
11 Correct 23 ms 2176 KB Output is correct
12 Correct 27 ms 2560 KB Output is correct
13 Correct 9 ms 896 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 74 ms 6136 KB Output is correct
10 Correct 55 ms 5112 KB Output is correct
11 Correct 23 ms 2164 KB Output is correct
12 Correct 28 ms 2560 KB Output is correct
13 Correct 9 ms 896 KB Output is correct
14 Correct 101 ms 7160 KB Output is correct
15 Correct 125 ms 8952 KB Output is correct
16 Correct 21 ms 1920 KB Output is correct
17 Correct 69 ms 6136 KB Output is correct
18 Correct 36 ms 3576 KB Output is correct