oj.uz

Submission #615758

# Submission time Handle Problem Language Result Execution time Memory
615758 2022-07-31T12:22:36 Z nohaxjustsoflo Gondola (IOI14_gondola) C++17
75 / 100
 1000 ms 3076 KB 
#include <bits/stdc++.h>
#include <iostream>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<ll,null_type,less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update> order_set;
mt19937 mt_rand(chrono::high_resolution_clock::now().time_since_epoch().count());
//uniform_int_distribution<int> gen; ///(min, max)
//int random() {return gen(mt_rand);}
const int mxN=1e6+5;
const int mod=1e9+9;
const int mxlogN=40;
const int mxK=26;
const int inf=2e9;
const int K=600;
#include "gondola.h"

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

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

int replacement(int n, int a[], int b[])
{
    int c[n];
    iota(c,c+n,1);
    for(int i=0; i<n; i++)
    {
        if(a[i]<=n)
        {
            for(int j=i; j-i<n; j++) c[j%n]=(a[i]+j-i-1)%n+1;
            break;
        }
    }
    int w[250001];
    for(int i=1; i<=250000; i++) w[i]=-1;
    for(int i=0; i<n; i++) w[a[i]]=c[i];
    for(int i=249999; i>n; i--) if(!~w[i]) w[i]=w[i+1];
    int j=0;
    for(int i=n+1; i<=250000; i++)
    {
        if(!~w[i]) break;
        if(w[i]==w[i-1]) b[j++]=i-1;
        else b[j++]=w[i];
    }
    return j;
}

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

ll powb(ll a, ll x)
{
    ll ret=1;
    a%=mod;
    while(x)
    {
        if(x&1)ret=ret*a%mod;
        x>>=1;
        a=a*a%mod;
    }
    return ret;
}

int countReplacement(int n, int a[])
{
    if(!valid(n, a)) return 0;
    sort(a,a+n);

    ll ways=1;
    bool ok=1;
    for(int i=0; i<n; i++)
    {
        if(a[i]>n)
        {
            int sz;
            if(i) sz=a[i]-max(n,a[i-1]);
            else sz=a[i]-n;
            ways=ways*powb(n-i,sz-1)%mod;
        }
        else ok=0;
    }
    if(ok) while(1);
    return ways;
}
/*
int countReplacement(int n, int a[])
{
    if(!valid(n, a)) return 0;

    int c[n];
    iota(c,c+n,1);
    bool ok=1;
    for(int i=0; i<n; i++)
    {
        if(a[i]<=n)
        {
            for(int j=i; j-i<n; j++) c[j%n]=(a[i]+j-i-1)%n+1;
            ok=0;
            break;
        }
    }
    int w[250001];
    for(int i=1; i<=250000; i++) w[i]=-1;
    for(int i=0; i<n; i++) w[a[i]]=c[i];
    set<int> s;
    for(int i=249999; i>n; i--)
    {
        if(!~w[i]) w[i]=w[i+1];
        else s.insert(w[i]);
    }
    ll ways=1;
    for(int i=n+1; i<=250000; i++)
    {
        if(!~w[i]) break;
        if(w[i]==w[i-1]) ways=ways*(ll)s.size()%mod;
        else s.erase(w[i-1]);
    }
    if(ok) for(int i=2; i<=n; i++) ways=ways*i%mod;
    return ways;
}

int main()
{
    int n; cin >> n;
    int a[n];
    for(int i=0; i<n; i++) cin >> a[i];
    cout << countReplacement(n,a);
}
*/
/*
5 4 3
0 1 2
0 2 3
3 2 1
2 4 4
1 3 4
*/

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 6 ms 340 KB Output is correct
7 Correct 7 ms 580 KB Output is correct
8 Correct 9 ms 596 KB Output is correct
9 Correct 4 ms 340 KB Output is correct
10 Correct 13 ms 596 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 6 ms 340 KB Output is correct
7 Correct 7 ms 596 KB Output is correct
8 Correct 9 ms 568 KB Output is correct
9 Correct 4 ms 340 KB Output is correct
10 Correct 18 ms 640 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 7 ms 460 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 7 ms 596 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 1236 KB Output is correct
3 Correct 1 ms 1248 KB Output is correct
4 Correct 1 ms 1236 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1236 KB Output is correct
2 Correct 1 ms 1236 KB Output is correct
3 Correct 2 ms 1236 KB Output is correct
4 Correct 2 ms 1236 KB Output is correct
5 Correct 2 ms 1236 KB Output is correct
6 Correct 2 ms 1236 KB Output is correct
7 Correct 2 ms 1236 KB Output is correct
8 Correct 2 ms 1236 KB Output is correct
9 Correct 2 ms 1308 KB Output is correct
10 Correct 2 ms 1236 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1236 KB Output is correct
2 Correct 1 ms 1236 KB Output is correct
3 Correct 2 ms 1236 KB Output is correct
4 Correct 1 ms 1236 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 1 ms 1236 KB Output is correct
8 Correct 3 ms 1236 KB Output is correct
9 Correct 2 ms 1236 KB Output is correct
10 Correct 2 ms 1236 KB Output is correct
11 Correct 9 ms 1876 KB Output is correct
12 Correct 10 ms 1992 KB Output is correct
13 Correct 11 ms 2180 KB Output is correct
14 Correct 10 ms 1872 KB Output is correct
15 Correct 18 ms 3076 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 260 KB Output is correct

Subtask #9
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 15 ms 964 KB Output is correct
10 Correct 12 ms 832 KB Output is correct
11 Correct 5 ms 468 KB Output is correct
12 Correct 5 ms 580 KB Output is correct
13 Execution timed out 1081 ms 324 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 19 ms 980 KB Output is correct
10 Correct 12 ms 920 KB Output is correct
11 Correct 4 ms 468 KB Output is correct
12 Correct 6 ms 596 KB Output is correct
13 Execution timed out 1082 ms 340 KB Time limit exceeded
14 Halted 0 ms 0 KB -