Submission #763315

#	Time	Username	Problem	Language	Result	Execution time	Memory
763315		vjudge1	Xylophone (JOI18_xylophone)	C++17	Compilation error	0 ms	0 KiB

xylophone

#include "xylophone.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
void solve(int N){
	cin>>N;
	vector<int> duo(N+1,0);
	vector<int> trio(N+1,0);
	vector<int> arr(N+1,0);
	for(int i=1;i<N;++i){
		duo[i-1] = ask(i,i+1);
	}
	arr[1] = duo[0];
	for(int i=2;i<N;++i){
		trio[i-2] = ask(i-1,i+1);
	}
	bool greater = true;
	for(int i=2;i<N;++i){
		if(trio[i-2] == duo[i-1] + duo[i-2]){
			greater = !greater;
		}
		arr[i] = arr[i-1] + duo[i-1] * ((int)greater * 2 - 1);
	}
	int maxi = 0, mini = 0;
	int maxpos = 0, minpos = 0;
	for(int i=1;i<N;++i){
		if(arr[i] > maxi){
			maxi = arr[i];
			maxpos = i;
		}
		if(arr[i] < mini){
			mini = arr[i];
			minpos = i;
		}
	}
	if(minpos < maxpos){
		for(int i=0;i<N;++i){
			answer(i+1,arr[i]-mini + 1);
		}
	}
	else{
		for(int i=0;i<N;++i){
			answer(i+1,maxi - arr[i] + 1);
		}
	}
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:11:14: error: 'ask' was not declared in this scope
   11 |   duo[i-1] = ask(i,i+1);
      |              ^~~
xylophone.cpp:15:15: error: 'ask' was not declared in this scope
   15 |   trio[i-2] = ask(i-1,i+1);
      |               ^~~