Submission #763649

#	Time	Username	Problem	Language	Result	Execution time	Memory
763649		vjudge1	Xylophone (JOI18_xylophone)	C++17	0 / 100	1 ms	208 KiB

xylophone

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

long long a[1000001];

int query(int x, int y);
void answer(int x, int y);

void solve(int n)
{
	long long mini = INT_MAX, pos;
	a[1] = 0;	a[2] = query(1, 2);
	for(int i = 3; i <= n; ++i)
	{
		long long temp1 = query(i - 1, i), temp2 = query(i - 2, i);
		if(temp2 != temp1 + a[i - 2] - a[i - 1] || temp2 == temp1 + a[i - 1] - a[i - 2])	a[i] = a[i - 1] + temp1;
		else	a[i] = a[i - 1] - temp1;
	}
	for(int i = 1; i <= n; ++i)
	{
		if(mini > a[i])
		{
			mini = a[i];
			pos = i;
		}
	}
	for(int i = 1; i <= n; ++i)	answer(i, a[i] - pos + 1);
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:27:45: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
   27 |  for(int i = 1; i <= n; ++i) answer(i, a[i] - pos + 1);
      |                                        ~~~~~^~~~~

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