oj.uz

답안 #112505

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
112505 2019-05-20T10:54:45 Z Mercenary 곤돌라 (IOI14_gondola) C++14
50 / 100
 115 ms 2500 KB 
#include "gondola.h"
#include<bits/stdc++.h>
using namespace std;

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

//----------------------
typedef pair<int,int> ii;
typedef long long ll;
#define mp make_pair
const int maxl = 25e4 + 5;
const int mod = 1e9 + 7;

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
    assert(valid(n,gondolaSeq));
    vector<ii> a;
    for(int i = 0 ; i < n ; ++i){
        if(gondolaSeq[i] > n)a.push_back(mp(gondolaSeq[i],i));
    }
    sort(a.begin(),a.end());
    int now = 0;
    int l = 0;
    vector<int> avai , pos(maxl);
    int root = -1;
    for(int i = 0 ; i < n ; ++i){
        if(gondolaSeq[i] <= n){
            root = i;
            break;
        }
    }
//    printf("%d",root);
    for(int i = (root == -1 ? 1 : gondolaSeq[root]) , j = (root == -1 ? 0 : root) , cnt = n ; cnt-- ; j = (j + 1) % n , i = i % n + 1){
        pos[i] = j;
        if(gondolaSeq[j] != i){
            gondolaSeq[j] = i;
            avai.push_back(i);
        }
    }
    int res = 1;
    for(int j = n + 1 ; now < a.size() ; ++j){
        if(a[now].first == j){
//            printf("%d\n", gondolaSeq[a[now].second]);
            replacementSeq[l++] = gondolaSeq[a[now].second];
            avai.erase(find(avai.begin(),avai.end(),gondolaSeq[a[now].second]));
//            cerr << gondolaSeq[a[now].second] << endl;
            ++now;
        }else{
            replacementSeq[l++] = avai.back();
            gondolaSeq[pos[avai.back()]] = j;
            pos[j] = pos[avai.back()];
            avai.back() = j;
            res = (ll)res * avai.size() % mod;
        }
    }
    for(int i = 1 ; i <= n ; ++i)res = res * i % mod;
    return l;
}

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

int countReplacement(int n, int gondolaSeq[])
{
    if(valid(n,gondolaSeq) == 0)return 0;
    vector<ii> a;
    for(int i = 0 ; i < n ; ++i){
        if(gondolaSeq[i] > n)a.push_back(mp(gondolaSeq[i],i));
    }
    sort(a.begin(),a.end());
    int now = 0;
    int l = 0;
    vector<int> avai , pos(maxl);
    int root = -1;
    for(int i = 0 ; i < n ; ++i){
        if(gondolaSeq[i] <= n){
            root = i;
            break;
        }
    }
//    printf("%d",root);
    for(int i = (root == -1 ? 1 : gondolaSeq[root]) , j = (root == -1 ? 0 : root) , cnt = n ; cnt-- ; j = (j + 1) % n , i = i % n + 1){
        pos[i] = j;
        if(gondolaSeq[j] != i){
            gondolaSeq[j] = i;
            avai.push_back(i);
        }
    }
    int res = 1;
    for(int j = n + 1 ; now < a.size() ; ++j){
        if(a[now].first == j){
//            printf("%d\n", gondolaSeq[a[now].second]);
//            replacementSeq[l++] = gondolaSeq[a[now].second];
            avai.erase(find(avai.begin(),avai.end(),gondolaSeq[a[now].second]));
//            cerr << gondolaSeq[a[now].second] << endl;
            ++now;
        }else{
//            replacementSeq[l++] = avai.back();
            gondolaSeq[pos[avai.back()]] = j;
            pos[j] = pos[avai.back()];
            avai.back() = j;
            res = (ll)res * avai.size() % mod;
        }
    }
    if(root == -1)for(int i = 1 ; i <= n ; ++i)res = res * i % mod;
    return res;
}

Compilation message

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:58:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int j = n + 1 ; now < a.size() ; ++j){
                         ~~~~^~~~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:106:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int j = n + 1 ; now < a.size() ; ++j){
                         ~~~~^~~~~~~~~~
gondola.cpp:88:9: warning: unused variable 'l' [-Wunused-variable]
     int l = 0;
         ^

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 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 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 6 ms 640 KB Output is correct
7 Correct 13 ms 1124 KB Output is correct
8 Correct 11 ms 1024 KB Output is correct
9 Correct 4 ms 560 KB Output is correct
10 Correct 13 ms 1152 KB Output is correct

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 7 ms 636 KB Output is correct
7 Correct 12 ms 1152 KB Output is correct
8 Correct 11 ms 1024 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 11 ms 1152 KB Output is correct
11 Incorrect 2 ms 256 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #4
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1280 KB Output is correct
2 Correct 2 ms 1280 KB Output is correct
3 Correct 2 ms 1280 KB Output is correct
4 Correct 3 ms 1280 KB Output is correct
5 Correct 3 ms 1280 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1280 KB Output is correct
2 Correct 3 ms 1280 KB Output is correct
3 Correct 3 ms 1280 KB Output is correct
4 Correct 3 ms 1280 KB Output is correct
5 Correct 3 ms 1280 KB Output is correct
6 Correct 3 ms 1280 KB Output is correct
7 Correct 2 ms 1280 KB Output is correct
8 Correct 3 ms 1280 KB Output is correct
9 Correct 3 ms 1408 KB Output is correct
10 Correct 3 ms 1408 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1280 KB Output is correct
2 Correct 3 ms 1280 KB Output is correct
3 Correct 3 ms 1280 KB Output is correct
4 Correct 2 ms 1280 KB Output is correct
5 Correct 3 ms 1280 KB Output is correct
6 Correct 3 ms 1280 KB Output is correct
7 Correct 3 ms 1280 KB Output is correct
8 Correct 3 ms 1324 KB Output is correct
9 Correct 3 ms 1280 KB Output is correct
10 Correct 3 ms 1280 KB Output is correct
11 Correct 12 ms 2048 KB Output is correct
12 Correct 14 ms 2296 KB Output is correct
13 Correct 115 ms 2460 KB Output is correct
14 Correct 13 ms 2048 KB Output is correct
15 Correct 49 ms 2500 KB Output is correct

Subtask #7
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1280 KB Output is correct
2 Correct 3 ms 1280 KB Output is correct
3 Correct 3 ms 1280 KB Output is correct

Subtask #8
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1280 KB Output is correct
2 Correct 3 ms 1280 KB Output is correct
3 Correct 2 ms 1280 KB Output is correct
4 Correct 3 ms 1280 KB Output is correct
5 Correct 2 ms 1280 KB Output is correct
6 Correct 2 ms 1280 KB Output is correct
7 Incorrect 3 ms 1280 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #9
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1280 KB Output is correct
2 Correct 3 ms 1280 KB Output is correct
3 Correct 3 ms 1280 KB Output is correct
4 Correct 3 ms 1280 KB Output is correct
5 Correct 3 ms 1280 KB Output is correct
6 Correct 2 ms 1280 KB Output is correct
7 Incorrect 3 ms 1280 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1280 KB Output is correct
2 Correct 3 ms 1280 KB Output is correct
3 Correct 3 ms 1324 KB Output is correct
4 Correct 3 ms 1280 KB Output is correct
5 Correct 3 ms 1280 KB Output is correct
6 Correct 3 ms 1280 KB Output is correct
7 Incorrect 2 ms 1280 KB Output isn't correct
8 Halted 0 ms 0 KB -