oj.uz

Submission #153281

# Submission time Handle Problem Language Result Execution time Memory
153281 2019-09-13T07:39:50 Z arnold518 Gondola (IOI14_gondola) C++14
100 / 100
 37 ms 2552 KB 
#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1e5;
const ll MOD = 1e9+9;

int valid(int N, int *A)
{
    int i, j;

    vector<int> S(A, A+N);
    sort(S.begin(), S.end());
    S.erase(unique(S.begin(), S.end()), S.end());
    if(S.size()!=N) return 0;

    int flag=-1;
    for(i=0; i<N; i++)
    {
        if(A[i]>N) continue;
        int t=(A[i]-1-i+N)%N;
        if(flag==-1) flag=t;
        else if(flag!=t) return 0;
    }
    return 1;
}

int replacement(int N, int *A, int *B)
{
    int i, j, ret=0;

    int flag=0;
    vector<pii> V;
    for(i=0; i<N; i++)
    {
        if(A[i]<=N)
        {
            flag=(A[i]-1-i+N)%N;
            continue;
        }
        V.push_back({A[i], i});
    }
    for(i=0; i<N; i++) A[i]=(i+flag)%N+1;
    sort(V.begin(), V.end());

    int now=N+1;
    for(i=0; i<V.size(); i++)
    {
        int p=V[i].first, q=V[i].second;
        while(A[q]!=p)
        {
            B[ret++]=A[q];
            A[q]=now++;
        }
    }
    return ret;
}

ll mypow(ll x, ll y)
{
    if(y==0) return 1;
    if(y%2) return mypow(x, y-1)*x%MOD;
    ll ret=mypow(x, y/2);
    return ret*ret%MOD;
}

int countReplacement(int N, int *A)
{
    int i, j; ll ans=1;
    if(!valid(N, A)) return 0;

    int flag=-1;
    vector<int> V; V.push_back(N);
    for(i=0; i<N; i++)
    {
        if(A[i]<=N) flag=0;
        else V.push_back(A[i]);
    }
    sort(V.begin(), V.end());
    for(i=1; i<V.size(); i++) ans=ans*mypow(V.size()-i, V[i]-V[i-1]-1)%MOD;
    if(flag==-1) ans=ans*N%MOD;
    return ans;
}

Compilation message

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:19:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(S.size()!=N) return 0;
        ~~~~~~~~^~~
gondola.cpp:14:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:51:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0; i<V.size(); i++)
              ~^~~~~~~~~
gondola.cpp:34:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j, ret=0;
            ^
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:84:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=1; i<V.size(); i++) ans=ans*mypow(V.size()-i, V[i]-V[i-1]-1)%MOD;
              ~^~~~~~~~~
gondola.cpp:73:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j; ll ans=1;
            ^

Subtask #1
5.0 / 5.0

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

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 10 ms 632 KB Output is correct
7 Correct 20 ms 1016 KB Output is correct
8 Correct 14 ms 888 KB Output is correct
9 Correct 7 ms 504 KB Output is correct
10 Correct 20 ms 1016 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 10 ms 632 KB Output is correct
7 Correct 20 ms 1016 KB Output is correct
8 Correct 14 ms 888 KB Output is correct
9 Correct 7 ms 504 KB Output is correct
10 Correct 20 ms 1016 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 10 ms 632 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 21 ms 1016 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 380 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 404 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 252 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 12 ms 632 KB Output is correct
12 Correct 13 ms 632 KB Output is correct
13 Correct 18 ms 1300 KB Output is correct
14 Correct 12 ms 632 KB Output is correct
15 Correct 24 ms 2196 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 252 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 256 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 25 ms 1100 KB Output is correct
10 Correct 20 ms 1020 KB Output is correct
11 Correct 9 ms 632 KB Output is correct
12 Correct 11 ms 632 KB Output is correct
13 Correct 5 ms 376 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 25 ms 1096 KB Output is correct
10 Correct 22 ms 1016 KB Output is correct
11 Correct 10 ms 632 KB Output is correct
12 Correct 11 ms 632 KB Output is correct
13 Correct 6 ms 376 KB Output is correct
14 Correct 33 ms 2340 KB Output is correct
15 Correct 37 ms 2552 KB Output is correct
16 Correct 8 ms 760 KB Output is correct
17 Correct 25 ms 1648 KB Output is correct
18 Correct 13 ms 1248 KB Output is correct