oj.uz

답안 #112517

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
112517 2019-05-20T11:33:21 Z Mercenary 곤돌라 (IOI14_gondola) C++14
60 / 100
 110 ms 3584 KB 

#include "gondola.h"
#include<bits/stdc++.h>
using namespace std;

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


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

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

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:62:29: 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:110:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int j = n + 1 ; now < a.size() ; ++j){
                         ~~~~^~~~~~~~~~
gondola.cpp:92:9: 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 1280 KB Output is correct
2 Correct 2 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 1408 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1280 KB Output is correct
2 Correct 3 ms 1280 KB Output is correct
3 Correct 3 ms 1252 KB Output is correct
4 Correct 3 ms 1280 KB Output is correct
5 Correct 3 ms 1280 KB Output is correct
6 Correct 9 ms 1792 KB Output is correct
7 Correct 13 ms 1920 KB Output is correct
8 Correct 11 ms 1920 KB Output is correct
9 Correct 6 ms 1536 KB Output is correct
10 Correct 12 ms 1920 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 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 7 ms 1664 KB Output is correct
7 Correct 13 ms 1920 KB Output is correct
8 Correct 11 ms 1920 KB Output is correct
9 Correct 6 ms 1536 KB Output is correct
10 Correct 12 ms 1892 KB Output is correct
11 Correct 3 ms 1280 KB Output is correct
12 Correct 2 ms 1280 KB Output is correct
13 Correct 8 ms 1664 KB Output is correct
14 Correct 3 ms 1280 KB Output is correct
15 Correct 14 ms 2176 KB Output is correct

Subtask #4
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1324 KB Output is correct
2 Correct 3 ms 1324 KB Output is correct
3 Correct 3 ms 1324 KB Output is correct
4 Correct 3 ms 1324 KB Output is correct
5 Correct 3 ms 1324 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1324 KB Output is correct
2 Correct 3 ms 1324 KB Output is correct
3 Correct 3 ms 1324 KB Output is correct
4 Correct 3 ms 1324 KB Output is correct
5 Correct 3 ms 1324 KB Output is correct
6 Correct 3 ms 1324 KB Output is correct
7 Correct 3 ms 1324 KB Output is correct
8 Correct 4 ms 1452 KB Output is correct
9 Correct 4 ms 1324 KB Output is correct
10 Correct 4 ms 1452 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1324 KB Output is correct
2 Correct 3 ms 1324 KB Output is correct
3 Correct 4 ms 1324 KB Output is correct
4 Correct 3 ms 1324 KB Output is correct
5 Correct 3 ms 1324 KB Output is correct
6 Correct 3 ms 1324 KB Output is correct
7 Correct 4 ms 1324 KB Output is correct
8 Correct 4 ms 1324 KB Output is correct
9 Correct 4 ms 1324 KB Output is correct
10 Correct 4 ms 1324 KB Output is correct
11 Correct 13 ms 1964 KB Output is correct
12 Correct 15 ms 1964 KB Output is correct
13 Correct 110 ms 2708 KB Output is correct
14 Correct 15 ms 1956 KB Output is correct
15 Correct 51 ms 3584 KB Output is correct

Subtask #7
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 1324 KB Output is correct
2 Correct 3 ms 1324 KB Output is correct
3 Correct 3 ms 1324 KB Output is correct

Subtask #8
0 / 15.0

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

Subtask #9
0 / 15.0

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