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Submission #230564

# Submission time Handle Problem Language Result Execution time Memory
230564 2020-05-10T11:58:18 Z Dilshod_Imomov Xylophone (JOI18_xylophone) C++17
0 / 100
 6 ms 384 KB 
#include "xylophone.h"
#include <bits/stdc++.h>
using namespace std;

void solve(int n) {
	int l = 0, r = n, ind = 0, md;
	while ( l <= r ) {
		md = (l + r) / 2;
		if ( query( md, n ) == n - 1 ) {
			l = md + 1;
			ind = md;
		}
		else {
			r = md - 1;
		}
	}
	vector < int > a( n + 1 );
	a[ind] = 1;
	set < int > st;
	answer( ind, 1 );
	for ( int i = 2; i <= n; i++ ) {
		st.insert(i);
	}
	if ( ind + 1 <= n ) {
		int x = query( ind, ind + 1 );
		a[ind + 1] = x + 1;
		answer( ind + 1, x + 1 );
	}
	if ( ind - 1 > 0 ) {
		int x = query( ind - 1, ind );
		a[ind - 1] = x + 1;
		answer( ind - 1, x + 1 );
	}
	for ( int i = ind + 2; i <= n; i++ ) {
		int x = a[ i - 1 ], y = a[i - 2];
		int d = query( i - 1, i );
		if ( x - d < 1 ) {
			a[i] = x + d;
			answer( i, x + d );
			continue;
		}
		if ( x + d > n ) {
			a[i] = x - d;
			answer( i, x - d );
			continue;
		}
		int q = query( i - 2, i );
		int mx = max( { x, y, x - d } ), mn = min( { x, y, x - d } );
		if ( q == mx - mn ) {
			a[i] = x - d;
			answer( i, x - d );
		}
		else {
			a[i] = x + d;
			answer( i, x + d );
		}
	}
	for ( int i = ind - 2; i > 0; i-- ) {
		int x = a[ i + 1 ], y = a[i + 2];
		int d = query( i, i + 1 );
		if ( x - d < 1 ) {
			a[i] = x + d;
			answer( i, x + d );
			continue;
		}
		if ( x + d > n ) {
			a[i] = x - d;
			answer( i, x - d );
			continue;
		}
		int q = query( i, i + 2 );
		int mx = max( { x, y, x - d } ), mn = min( { x, y, x - d } );
		if ( q == mx - mn ) {
			a[i] = x - d;
			answer( i, x - d );
		}
		else {
			a[i] = x + d;
			answer( i, x + d );
		}	
	}
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 6 ms 256 KB Output is correct
5 Correct 6 ms 384 KB Output is correct
6 Incorrect 4 ms 256 KB Wrong Answer [1]
7 Halted 0 ms 0 KB -

Subtask #2
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 6 ms 256 KB Output is correct
5 Correct 6 ms 384 KB Output is correct
6 Incorrect 4 ms 256 KB Wrong Answer [1]
7 Halted 0 ms 0 KB -

Subtask #3
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 6 ms 256 KB Output is correct
5 Correct 6 ms 384 KB Output is correct
6 Incorrect 4 ms 256 KB Wrong Answer [1]
7 Halted 0 ms 0 KB -