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Submission #268144

# Submission time Handle Problem Language Result Execution time Memory
268144 2020-08-16T09:27:25 Z alexandra_udristoiu Gondola (IOI14_gondola) C++14
100 / 100
 35 ms 2304 KB 
#include<iostream>
#include<algorithm>
#include "gondola.h"
#define DIM 100005
#define mod 1000000009
using namespace std;
static int w[DIM];
static pair<int, int> p[DIM];
static int mult(int x, int e){
    if(e == 0){
        return 1;
    }
    else{
        int a = mult(x, e / 2);
        if(e % 2 == 0){
            return a * 1LL * a % mod;
        }
        else{
            return a * 1LL * a % mod * x % mod;
        }
    }
}

int valid(int n, int v[]){
    int i, j, x;
    for(i = 0; i < n; i++){
        w[i] = v[i];
    }
    sort(w, w + n);
    for(i = 1; i < n; i++){
        if(w[i] == w[i - 1]){
            return 0;
        }
    }
    for(i = 0; i < n; i++){
        if(v[i] <= n){
            x = v[i];
            for(j = i; j < n; j++){
                if(v[j] <= n && v[j] != x){
                    return 0;
                }
                x++;
                if(x == n + 1){
                    x = 1;
                }
            }
            for(j = 0; j < i; j++){
                if(v[j] <= n && v[j] != x){
                    return 0;
                }
                x++;
                if(x == n + 1){
                    x = 1;
                }
            }
            break;
        }
    }
    return 1;
}


int replacement(int n, int v[], int r[]){
    int i, nr, x, y, k, j;
    for(i = 0; i < n; i++){
        if(v[i] <= n){
            x = i;
            y = v[x];
            break;
        }
    }
    if(i == n){
        x = 0;
        y = 1;
    }
    nr = k = 0;
    for(i = x; i < n; i++){
        if(v[i] != y){
            p[++nr] = make_pair(v[i], y);
        }
        y++;
        if(y == n + 1){
            y = 1;
        }
    }
    for(i = 0; i < x; i++){
        if(v[i] != y){
            p[++nr] = make_pair(v[i], y);
        }
        y++;
        if(y == n + 1){
            y = 1;
        }
    }
    sort(p + 1, p + nr + 1);
    p[0].first = n;
    for(i = 1; i <= nr; i++){
        r[k++] = p[i].second;
        for(j = p[i - 1].first + 1; j < p[i].first; j++){
            r[k++] = j;
        }
    }
    return k;
}

int countReplacement(int n, int v[]){
    if( valid(n, v) == 0){
        return 0;
    }
    int i, ok, sol, nr;
    nr = ok = 0;
    for(i = 0; i < n; i++){
        if(v[i] > n){
            w[++nr] = v[i];
        }
        else{
            ok = 1;
        }
    }
    sort(w + 1, w + nr + 1);
    sol = 1;
    w[0] = n;
    for(i = 1; i <= nr; i++){
        sol = sol * 1LL * mult(nr - i + 1, w[i] - w[i - 1] - 1) % mod;
    }
    if(ok == 0){
        sol = sol * 1LL * n % mod;
    }
    return sol;
}

Compilation message

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:81:10: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
   81 |         y++;
      |         ~^~
gondola.cpp:86:18: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
   86 |     for(i = 0; i < x; i++){
      |                ~~^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 9 ms 640 KB Output is correct
7 Correct 20 ms 1024 KB Output is correct
8 Correct 13 ms 820 KB Output is correct
9 Correct 6 ms 512 KB Output is correct
10 Correct 20 ms 1152 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 9 ms 640 KB Output is correct
7 Correct 19 ms 1024 KB Output is correct
8 Correct 16 ms 1024 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 19 ms 1024 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 9 ms 640 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 23 ms 1024 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 416 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 14 ms 640 KB Output is correct
12 Correct 13 ms 640 KB Output is correct
13 Correct 25 ms 1408 KB Output is correct
14 Correct 12 ms 640 KB Output is correct
15 Correct 25 ms 2304 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 23 ms 896 KB Output is correct
10 Correct 18 ms 768 KB Output is correct
11 Correct 8 ms 640 KB Output is correct
12 Correct 9 ms 768 KB Output is correct
13 Correct 3 ms 384 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 23 ms 896 KB Output is correct
10 Correct 19 ms 768 KB Output is correct
11 Correct 8 ms 640 KB Output is correct
12 Correct 10 ms 768 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 31 ms 1792 KB Output is correct
15 Correct 35 ms 2048 KB Output is correct
16 Correct 7 ms 640 KB Output is correct
17 Correct 24 ms 1408 KB Output is correct
18 Correct 15 ms 1024 KB Output is correct