Submission #294328

#	Time	Username	Problem	Language	Result	Execution time	Memory
294328		Badrangiikh	Gondola (IOI14_gondola)	C++14	55 / 100	37 ms	2280 KiB

gondola

#include<bits/stdc++.h>
#include "gondola.h"
using namespace std;
 
int valid(int n, int inputSeq[]){
    vector < pair < int , int > > vec ;
    vector < int > vc ;
    for ( int i = 0 ; i < n ; i ++ ) {
        if ( inputSeq [ i ] <= n ) {
            vec . push_back ( { inputSeq [ i ] , i } ) ;
        }
        vc . push_back ( inputSeq [ i ] ) ;
    }
    sort ( vc . begin ( ) , vc . end ( ) ) ;
    for ( int i = 1 ; i < vc . size ( ) ; i ++ ) {
        if ( vc [ i - 1 ] == vc [ i ] ) return 0 ;
    }
    sort ( vec . begin ( ) , vec . end ( ) ) ;
    for ( int i = 1 ; i < vec . size ( ) ; i ++ ) {
        if ( vec [ i ] . first - vec [ i - 1 ] . first != ( ( vec [ i ] . second - vec [ i - 1 ] . second ) % n + n ) % n ) {
            return 0 ;
        }
    }
    return 1 ; 
}
int replacement(int n, int gondolaSeq[], int replacementSeq[]){
    int maxx , minn , indx , x ;
    vector < int > vec ; 
    vector < pair < int , int > > vc ; 
    minn = n + 1 ;
    for ( int i = 0 ; i < n ; i ++ ) {
        if ( minn > gondolaSeq [ i ] ) {
            indx = i ;
            minn = gondolaSeq [ i ] ;
        }
        maxx = max ( maxx , gondolaSeq [ i ] ) ;
    }
    if ( minn <= n ) {
        for ( int i = ( n + indx - minn ) % n + 1 ; i <= ( n + indx - minn ) % n + n ; i ++ ) {
            vc . push_back ( { gondolaSeq [ i % n ] , i - ( ( n + indx - minn ) % n + 1 ) } ) ;
        }
    }
    else {
        for ( int i = 0 ; i < n ; i ++ ) {
            vc . push_back ( { gondolaSeq [ i ] , i } ) ;
        }
    }
    sort ( vc . begin ( ) , vc . end ( ) ) ;
    x = n + 1 ;
    for ( int i = 0 ; i < vc . size ( ) ; i ++ ) {
        if ( vc [ i ] . first == vc [ i ] . second + 1 ) continue ;
        vec . push_back ( vc [ i ] . second + 1 ) ;
        for ( int j = x ; j <= vc [ i ] . first - 1 ; j ++ ) {
            vec . push_back ( j ) ;
        }
        x = vc [ i ] . first + 1 ;
    } 
    for ( int i = 0 ; i < vec . size ( ) ; i ++ ) {
        replacementSeq [ i ] = vec [ i ] ;
    }
    return maxx - n ;
}
 
long long zeregt ( int s1 , int s2 ) {
    long long zer [ 45 ] ;
  long long mod1 = 1e9+9 ;
    zer [ 0 ] = s1 ;
    for ( int i = 1 ; i <= 30 ; i ++ ) {
        zer [ i ] = zer [ i - 1 ] * zer [ i - 1 ] ;
        zer [ i ] %= mod1 ;
    }
    long long s3 = 1 ;
    for ( int i = 0 ; i <= 30 ; i ++ ) {
        if ( s2 % 2 == 1 ) {
            s3 *= zer [ i ] ;
            s3 %= mod1 ;
        }
        s2 /= 2 ;
    }
    return s3 ;
}
 
int countReplacement(int n, int inputSeq[]) {
  long long ans , mod ;
  int x , y , z , maxx , minn , indx ;
  vector < int > ch , vec , vc ;
  vector < pair < int , int > > hc ;  
  for ( int i = 0 ; i < n ; i ++ ) {
        ch . push_back ( inputSeq [ i ] ) ;
        if ( inputSeq [ i ] <= n ) {
            hc . push_back ( { inputSeq [ i ] , i + 1 } ) ;
        }
    }
    sort ( ch . begin ( ) , ch . end ( ) ) ;
    for ( int i = 1 ; i < ch . size ( ) ; i ++ ) {
        if ( ch [ i ] == ch [ i - 1 ] ) {
            return 0 ;
        }
    }
    sort ( hc . begin ( ) , hc . end ( ) ) ;
    for ( int i = 1 ; i < hc . size ( ) ; i ++ ) {
        if ( hc [ i ] . first - hc [ i - 1 ] . first != ( ( hc [ i ] . second - hc [ i - 1 ] . second ) % n + n ) % n ) {
            return 0 ;
        }
    }
    minn = n + 1 ;
    for ( int i = 0 ; i < n ; i ++ ) {
        if ( minn > inputSeq [ i ] ) {
            indx = i ;
            minn =  inputSeq [ i ] ;
        }
        maxx = max ( maxx , inputSeq [ i ] ) ;
    }
    if ( minn <= n ) {
        for ( int i = ( n + indx - minn ) % n + 1 ; i <= ( n + indx - minn ) % n + n ; i ++ ) {
            vc . push_back ( inputSeq [ i % n ] ) ;
        }
    }
    else {
        for ( int i = 0 ; i < n ; i ++ ) {
            vc . push_back ( inputSeq [ i ] ) ;
        }
    }
    sort ( vc . begin ( ) , vc . end ( ) ) ;
    mod = 1000000009 ;
    for ( int i = 0 ; i < n ; i ++ ) {
        if ( vc [ i ] != i + 1 ) {
            x = n ;
            y = n - i ;
            break ;
        }
    }
    ans = 1 ;
    for ( int i = 0 ; i < n ; i ++ ) {
        if ( vc [ i ] == i + 1 ) {
            continue ;
        }
        z = vc [ i ] - x - 1 ;
        ans *= ( zeregt ( y , z ) % mod ) ;
        ans %= mod ;
        x = vc [ i ] ;
        y -- ;
    }
    x = ans ;
  return x ;
}

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:15:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for ( int i = 1 ; i < vc . size ( ) ; i ++ ) {
      |                       ~~^~~~~~~~~~~~~~~
gondola.cpp:19:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     for ( int i = 1 ; i < vec . size ( ) ; i ++ ) {
      |                       ~~^~~~~~~~~~~~~~~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:50:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for ( int i = 0 ; i < vc . size ( ) ; i ++ ) {
      |                       ~~^~~~~~~~~~~~~~~
gondola.cpp:58:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |     for ( int i = 0 ; i < vec . size ( ) ; i ++ ) {
      |                       ~~^~~~~~~~~~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:95:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |     for ( int i = 1 ; i < ch . size ( ) ; i ++ ) {
      |                       ~~^~~~~~~~~~~~~~~
gondola.cpp:101:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  101 |     for ( int i = 1 ; i < hc . size ( ) ; i ++ ) {
      |                       ~~^~~~~~~~~~~~~~~
gondola.cpp:142:11: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
  142 |         y -- ;
      |         ~~^~
gondola.cpp:138:22: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
  138 |         z = vc [ i ] - x - 1 ;
gondola.cpp:115:27: warning: 'indx' may be used uninitialized in this function [-Wmaybe-uninitialized]
  115 |         for ( int i = ( n + indx - minn ) % n + 1 ; i <= ( n + indx - minn ) % n + n ; i ++ ) {
      |                         ~~^~~~~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:39:27: warning: 'indx' may be used uninitialized in this function [-Wmaybe-uninitialized]
   39 |         for ( int i = ( n + indx - minn ) % n + 1 ; i <= ( n + indx - minn ) % n + n ; i ++ ) {
      |                         ~~^~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 20 / 20
• Subtask 7: 0 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10