Submission #1236037

#	Time	Username	Problem	Language	Result	Execution time	Memory
1236037		Zbyszek99	Gondola (IOI14_gondola)	C++20	35 / 100	14 ms	1348 KiB

gondola

#include "gondola.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define ull unsigned long long
#define ff first
#define ss second
#define pii pair<int,int>
#define pll pair<long long, long long>
#define vi vector<int>
#define vl vector<long long>
#define pb push_back
#define rep(i, b) for(int i = 0; i < (b); ++i)
#define rep2(i,a,b) for(int i = a; i <= (b); ++i)
#define rep3(i,a,b,c) for(int i = a; i <= (b); i+=c)
#define count_bits(x) __builtin_popcountll((x))
#define all(x) (x).begin(),(x).end()
#define siz(x) (int)(x).size()
#define forall(it,x) for(auto& it:(x))
using namespace __gnu_pbds;
using namespace std;
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;
mt19937 mt;void random_start(){mt.seed(chrono::time_point_cast<chrono::milliseconds>(chrono::high_resolution_clock::now()).time_since_epoch().count());}
ll los(ll a, ll b) {return a + (mt() % (b-a+1));}
const int INF = 1e9+50;
const ll INF_L = 1e18+40;
const ll MOD = 1e9+9;

bool was = 0;

ll fast_power(ll x, ll p)
{
    ll ans = 1;
    rep2(bit,0,30)
    {
        if(p & (1 << bit))
        {
            ans *= x;
            ans %= MOD;
        }
        x *= x;
        x %= MOD;
    }
    return ans;
}

int countReplacement(int n, int inputSeq[])
{
    int step = 0;
    vi arr(n);
    rep(i,n)
    {
        if(inputSeq[i] <= n)
        {
            step = (inputSeq[i]-(i+1) + n) % n;
        }
    }
    rep(i,n)
    {
        arr[(i+step)%n] = inputSeq[i];
    }
    rep(i,n)
    {
        if(arr[i] <= n && i+1 != arr[i])
        {
            was = 0;
            return 0;
        }
    }
    ll ways = 1;
    vi vals;
    rep(i,n)
    {
        if(arr[i] > n) vals.pb(arr[i]);
    }
    sort(all(vals));
    ll prev = n;
    rep(i,siz(vals))
    {
        ways *= fast_power(siz(vals)-i,vals[i]-prev-1);
        ways %= MOD;
        prev = vals[i];
    }
    return ways;
}

int valid(int n, int inputSeq[])
{
    was = 1;
    countReplacement(n,inputSeq);
    if(was)
    {
        return 1;
    }
    return 0;
}

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
    vector<pii> vals;
    int step = 0;
    rep(i,n)
    {
        if(gondolaSeq[i] <= n)
        {
            step = (gondolaSeq[i]-(i+1) + n) % n;
        }
    }
    rep(i,n)
    {
        if(gondolaSeq[i] > n)
        {
            vals.pb({gondolaSeq[i],(i+step)%n+1});
        }
    }
    int cur = n+1;
    sort(all(vals));
    int cur_val = 0;
    int cur_ind = 0;
    while(cur_val < siz(vals))
    {
        if(cur <= vals[cur_val].ff)
        {
            replacementSeq[cur_ind++] = vals[cur_val].ss;
            cur++;
        }
        else cur_val++;
    }
    return cur_ind;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 0 / 10
• Subtask 4: 5 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 20
• Subtask 7: 5 / 5
• Subtask 8: 15 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10