Submission #200183

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
200183	2020-02-05T15:45:51 Z	nsn	Xylophone (JOI18_xylophone)	C++14	Compilation error	0 ms	0 KB

xylophone

#include <bits/stdc++.h>
using namespace std;
int r[5005], g, pr[5005];
vector <int> mp;
int maxm, minm, maxn = 0, minn = 0;
int n[5005];
void solve(int N) 
{
	for(int i = 1; i < N; i++) 
	{
		pr[i] = query(i, i+1);
	}
	for(int i = 1; i < N-1; i++) 
	{
		r[i] = query(i, i+2);
		if(r[i] == pr[i] || r[i] == pr[i+1])
		{
			mp.push_back(i+1);
		}
	}
	mp.push_back(N);
	int tv = 0;
	int x = 0, tx = 0;
	for(int i = 1; i < N; i++)
	{
		if(i == mp[tx])
		{
			tx++;
		}
		if(tx % 2 == 0)
		{
			tv += pr[i]; 
		}
		else
		{
			tv -= pr[i];
		}
		if(maxn < tv)
		{
			maxn = tv;
			maxm = i+1;
		}
		if(minn > tv)
		{
			minn = tv;
			minm = i+1;
		}
	}
	if(minm > maxm)
	{
		x = 1;
		swap(maxm, minm);
	}
	tx = 0;
	int tp = 0;
	for(int i = 1; i < N; i++)
	{
		if(i == mp[tx])
		{
			tx++;
		}
		if(tx % 2 != x)
		{
			pr[i] = -pr[i];
		}
	}
	n[minm] = 1;
	for(int i = minm-1; i >= 1; i--)
	{
		n[i] = n[i+1] - pr[i];
	}
	for(int i = minm+1; i <= N; i++)
	{
		n[i] = n[i-1] + pr[i-1];
	}
	for(int i = 1; i <= N; i++)
	{
		answer(i, n[i]);
	}
}

Compilation message

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:11:11: error: 'query' was not declared in this scope
   pr[i] = query(i, i+1);
           ^~~~~
xylophone.cpp:15:10: error: 'query' was not declared in this scope
   r[i] = query(i, i+2);
          ^~~~~
xylophone.cpp:78:3: error: 'answer' was not declared in this scope
   answer(i, n[i]);
   ^~~~~~
xylophone.cpp:78:3: note: suggested alternative: 'assert'
   answer(i, n[i]);
   ^~~~~~
   assert
xylophone.cpp:55:6: warning: unused variable 'tp' [-Wunused-variable]
  int tp = 0;
      ^~