oj.uz

답안 #153280

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
153280 2019-09-13T07:38:22 Z arnold518 곤돌라 (IOI14_gondola) C++14
75 / 100
 26 ms 2404 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) for(i=1; i<=N; i++) ans=ans*i%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

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 348 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 252 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 360 KB Output is correct
2 Correct 2 ms 424 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 10 ms 888 KB Output is correct
7 Correct 21 ms 1500 KB Output is correct
8 Correct 14 ms 1272 KB Output is correct
9 Correct 7 ms 632 KB Output is correct
10 Correct 20 ms 1400 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 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 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 10 ms 804 KB Output is correct
7 Correct 21 ms 1528 KB Output is correct
8 Correct 14 ms 1272 KB Output is correct
9 Correct 7 ms 632 KB Output is correct
10 Correct 21 ms 1532 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 10 ms 764 KB Output is correct
14 Correct 2 ms 400 KB Output is correct
15 Correct 21 ms 1528 KB Output is correct

Subtask #4
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 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 2 ms 424 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 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 376 KB Output is correct
6 Correct 2 ms 256 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 3 ms 376 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 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 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 3 ms 380 KB Output is correct
10 Correct 3 ms 348 KB Output is correct
11 Correct 12 ms 1136 KB Output is correct
12 Correct 14 ms 1144 KB Output is correct
13 Correct 18 ms 1532 KB Output is correct
14 Correct 12 ms 1116 KB Output is correct
15 Correct 23 ms 2404 KB Output is correct

Subtask #7
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 256 KB Output is correct

Subtask #8
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 252 KB Output is correct
3 Correct 2 ms 380 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 380 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 256 KB Output is correct

Subtask #9
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 280 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 376 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 376 KB Output is correct
9 Correct 25 ms 1612 KB Output is correct
10 Correct 20 ms 1404 KB Output is correct
11 Correct 9 ms 760 KB Output is correct
12 Correct 11 ms 888 KB Output is correct
13 Incorrect 4 ms 376 KB Output isn't correct

Subtask #10
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 380 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 376 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 380 KB Output is correct
9 Correct 26 ms 1612 KB Output is correct
10 Correct 21 ms 1400 KB Output is correct
11 Correct 10 ms 760 KB Output is correct
12 Correct 11 ms 888 KB Output is correct
13 Incorrect 4 ms 376 KB Output isn't correct
14 Halted 0 ms 0 KB -