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Submission #66381

# Submission time Handle Problem Language Result Execution time Memory
66381 2018-08-10T10:51:19 Z someone_aa Gondola (IOI14_gondola) C++17
100 / 100
 76 ms 10536 KB 
#include "gondola.h"
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int maxn = 250100;
const ll mod = 1000000009;
map<int, bool>exist;
int fin_val[maxn];
ll cnt[maxn];

int valid(int n, int arr[]) {
    bool check = true;

    for(int i=1;i<n;i++) {
        if(arr[i] > n) continue;
        else if(arr[i] == 1) {
            if(arr[i-1] < n)
                check = false;
        }
        else {
            if(arr[i-1] <= n && arr[i-1] != arr[i] - 1) check = false;
        }
    }

    sort(arr, arr+n);
    for(int i=1;i<n;i++) {
        if(arr[i] == arr[i-1]) check = false;
    }
    if(check) return 1;
    else return 0;
}

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

int replacement(int n, int arr[], int replacementSeq[]) {
    int maxm = 0;
    int found_i = 0, st_val = 1;
    for(int i=0;i<n;i++) {
        exist[arr[i]] = true;
        if(arr[i] <= n) {
            found_i = i;
            st_val = arr[i];
        }
        maxm = max(maxm, arr[i]);
    }
    exist[n] = true;
    int l = maxm - n;


    for(int i=found_i;i<n;i++) {
        fin_val[i] = st_val;
        st_val++;
        if(st_val == n + 1) st_val = 1;
    }

    for(int i=0;i<found_i;i++) {
        fin_val[i] = st_val;
        st_val++;
        if(st_val == n + 1) st_val = 1;
    }

    for(int i=0;i<n;i++) {
        while(!exist[arr[i]-1] && arr[i] > n) {
            replacementSeq[arr[i]-n-1] = arr[i] - 1;
            arr[i]--;
        }
        if(arr[i] > n) replacementSeq[arr[i]-n-1] = fin_val[i];
    }

    return l;
}

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

ll power(ll a, ll b) {
    if(b == 0) return 1LL;
    else if(b == 1) return 1LL * a % mod;
    else {
        if(b%2 == 0) {
            ll half = power(a, b/2) % mod;
            return (1LL*half * half)% mod;
        }
        else if(b%2==1) {
            return (1LL*a*power(a, b-1)) % mod;
        }
    }
}

int countReplacement(int n, int arr[]) {
    if(!valid(n, arr)) return 0;
    vector<ll>nums;
    for(int i=0;i<n;i++) {
        if(arr[i] > n) nums.push_back(arr[i]);
    }
    nums.push_back(n);
    sort(nums.begin(), nums.end());

    ll result = 1LL;
    for(int i=1;i<nums.size();i++) {
        ll diff = 1LL * nums[i] - nums[i-1] - 1;
        ll p = 1LL * int(nums.size()) - i;
        result *= 1LL*power(p, diff);
        result %= mod;
    }

    if(nums.size() == n + 1) {
        result *= n;
        result %= mod;
    }
    return result;
}

/*int main() {
    int arr[] = {10, 20, 30, 40, 50, 60, 70};
    int arr2[1];
    cout<<countReplacement(7, arr);
}*/

Compilation message

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:99:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=1;i<nums.size();i++) {
                 ~^~~~~~~~~~~~
gondola.cpp:106:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(nums.size() == n + 1) {
        ~~~~~~~~~~~~^~~~~~~~
gondola.cpp: In function 'long long int power(long long int, long long int)':
gondola.cpp:87:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 484 KB Output is correct
4 Correct 2 ms 484 KB Output is correct
5 Correct 2 ms 496 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 2 ms 528 KB Output is correct
3 Correct 3 ms 528 KB Output is correct
4 Correct 3 ms 528 KB Output is correct
5 Correct 2 ms 528 KB Output is correct
6 Correct 10 ms 656 KB Output is correct
7 Correct 21 ms 912 KB Output is correct
8 Correct 14 ms 912 KB Output is correct
9 Correct 6 ms 912 KB Output is correct
10 Correct 20 ms 912 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 912 KB Output is correct
2 Correct 2 ms 912 KB Output is correct
3 Correct 2 ms 912 KB Output is correct
4 Correct 2 ms 912 KB Output is correct
5 Correct 3 ms 912 KB Output is correct
6 Correct 11 ms 912 KB Output is correct
7 Correct 21 ms 912 KB Output is correct
8 Correct 15 ms 912 KB Output is correct
9 Correct 11 ms 912 KB Output is correct
10 Correct 28 ms 912 KB Output is correct
11 Correct 2 ms 912 KB Output is correct
12 Correct 2 ms 912 KB Output is correct
13 Correct 11 ms 912 KB Output is correct
14 Correct 3 ms 912 KB Output is correct
15 Correct 25 ms 960 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 960 KB Output is correct
2 Correct 2 ms 960 KB Output is correct
3 Correct 2 ms 960 KB Output is correct
4 Correct 3 ms 960 KB Output is correct
5 Correct 3 ms 960 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 960 KB Output is correct
2 Correct 3 ms 960 KB Output is correct
3 Correct 3 ms 960 KB Output is correct
4 Correct 3 ms 960 KB Output is correct
5 Correct 3 ms 960 KB Output is correct
6 Correct 2 ms 960 KB Output is correct
7 Correct 4 ms 960 KB Output is correct
8 Correct 5 ms 960 KB Output is correct
9 Correct 3 ms 960 KB Output is correct
10 Correct 3 ms 960 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 960 KB Output is correct
2 Correct 3 ms 960 KB Output is correct
3 Correct 2 ms 960 KB Output is correct
4 Correct 3 ms 960 KB Output is correct
5 Correct 3 ms 960 KB Output is correct
6 Correct 2 ms 960 KB Output is correct
7 Correct 4 ms 960 KB Output is correct
8 Correct 5 ms 960 KB Output is correct
9 Correct 4 ms 960 KB Output is correct
10 Correct 4 ms 960 KB Output is correct
11 Correct 41 ms 5036 KB Output is correct
12 Correct 53 ms 5548 KB Output is correct
13 Correct 65 ms 5548 KB Output is correct
14 Correct 47 ms 5548 KB Output is correct
15 Correct 76 ms 10536 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10536 KB Output is correct
2 Correct 2 ms 10536 KB Output is correct
3 Correct 2 ms 10536 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10536 KB Output is correct
2 Correct 2 ms 10536 KB Output is correct
3 Correct 2 ms 10536 KB Output is correct
4 Correct 2 ms 10536 KB Output is correct
5 Correct 3 ms 10536 KB Output is correct
6 Correct 3 ms 10536 KB Output is correct
7 Correct 3 ms 10536 KB Output is correct
8 Correct 3 ms 10536 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10536 KB Output is correct
2 Correct 2 ms 10536 KB Output is correct
3 Correct 2 ms 10536 KB Output is correct
4 Correct 3 ms 10536 KB Output is correct
5 Correct 2 ms 10536 KB Output is correct
6 Correct 2 ms 10536 KB Output is correct
7 Correct 3 ms 10536 KB Output is correct
8 Correct 3 ms 10536 KB Output is correct
9 Correct 29 ms 10536 KB Output is correct
10 Correct 23 ms 10536 KB Output is correct
11 Correct 11 ms 10536 KB Output is correct
12 Correct 11 ms 10536 KB Output is correct
13 Correct 6 ms 10536 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10536 KB Output is correct
2 Correct 3 ms 10536 KB Output is correct
3 Correct 3 ms 10536 KB Output is correct
4 Correct 3 ms 10536 KB Output is correct
5 Correct 2 ms 10536 KB Output is correct
6 Correct 3 ms 10536 KB Output is correct
7 Correct 2 ms 10536 KB Output is correct
8 Correct 2 ms 10536 KB Output is correct
9 Correct 30 ms 10536 KB Output is correct
10 Correct 33 ms 10536 KB Output is correct
11 Correct 11 ms 10536 KB Output is correct
12 Correct 14 ms 10536 KB Output is correct
13 Correct 5 ms 10536 KB Output is correct
14 Correct 50 ms 10536 KB Output is correct
15 Correct 43 ms 10536 KB Output is correct
16 Correct 9 ms 10536 KB Output is correct
17 Correct 29 ms 10536 KB Output is correct
18 Correct 19 ms 10536 KB Output is correct