Submission #227437

#	Time	Username	Problem	Language	Result	Execution time	Memory
227437		muhammad_hokimiyon	Xylophone (JOI18_xylophone)	C++14	0 / 100	4 ms	384 KiB

xylophone

#include <bits/stdc++.h>
#include "xylophone.h"

using namespace std;

const int NN = 5e3 + 7;

int b[NN];

void solve(int n)
{
    int i = 1 , j = n;
    for( ; i < j; i++,j-- ){
        if( query( i + 1 , j - 1 ) != n - 1 ){
            while( query( i + 1 , j ) == n - 1 )i += 1;
            while( query( i , j - 1 ) == n - 1 )j -= 1;
            break;
        }
    }
    b[i] = 1;
    b[j] = n;
    if( i != 1 )b[i - 1] = query( i - 1 , i ) + 1;
    if( i + 1 < j )b[i + 1] = query( i , i + 1 ) + 1;
    if( j - 1 > i + 1 )b[j - 1] = n - query( j - 1 , j );
    if( j != n )b[j + 1] = n - query( j , j + 1 );
    for( int h = i - 2; h >= 1; h-- ){
        int x = query( h , h + 1 );
        int y = query( h , h + 2 );
        int x1 = b[h + 1];
        int y1 = b[h + 2];
        if( x1 > y1 ){
        if( y == x1 - y1 )b[h] = x1 - x;
        else if( x == y )b[h] = x1 - x;
        else b[h] = x1 + x;
            }else{
                if( y == x + y1 - x1 )b[h] = x1 - x;
                else if( y == y1 - x1 )b[h] = x1 + x;
                else b[h] = x1 + x;
        }
    }
    for( int h = i + 2; h <= j - 2; h++ ){
        int x = query( h - 1 , h );
        int y = query( h - 2 , h );
        int x1 = b[h - 1];
        int y1 = b[h - 2];
        if( x1 > y1 ){
        if( y == x1 - y1 )b[h] = x1 - x;
        else if( x == y )b[h] = x1 - x;
        else b[h] = x1 + x;
            }else{
                if( y == x + y1 - x1 )b[h] = x1 - x;
                else if( y == y1 - x1 )b[h] = x1 + x;
                else b[h] = x1 + x;
        }
    }
    for( int h = j + 2; h <= n; h++ ){
        int x = query( h - 1 , h );
        int y = query( h - 2 , h );
        int x1 = b[h - 1];
        int y1 = b[h - 2];
        if( x1 > y1 ){
        if( y == x1 - y1 )b[h] = x1 - x;
        else if( x == y )b[h] = x1 - x;
        else b[h] = x1 + x;
            }else{
                if( y == x + y1 - x1 )b[h] = x1 - x;
                else if( y == y1 - x1 )b[h] = x1 + x;
                else b[h] = x1 + x;
        }
    }
    for( int h = 1; h <= n; h++ ){
        answer( h , b[h] );
    }
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 36
• Subtask 3: 0 / 53