Submission #981322

#	Time	Username	Problem	Language	Result	Execution time	Memory
981322		Amaarsaa	Xylophone (JOI18_xylophone)	C++14	Compilation error	0 ms	0 KiB

xylophone

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

using namespace std;
using int = long long;

int a[5002], ans[5002];
/*
int query(int l, int r) {
	int mx, mn;
	mx = mn= a[l];
	for (int j = l; j <= r; j ++) mx = max(mx, a[j]), mn = min(mn, a[j]);
	return mx - mn;
}
*/
void solve(int N) {
	int mid,i, s,x1, x2, p, n = N, lo, hi;
	
	lo = 1;
	hi = n;
	while (lo < hi) {
		mid = (lo + hi)/2;
		if ( query(1, mid) == n - 1) hi = mid;
		else lo = mid + 1;
	}
	ans[lo] = n;
	ans[lo - 1] = n - query(lo - 1, lo); 
	for ( i = lo - 2; i >= 1; i --) {
		s = query(i, i + 1);
		p = query(i, i + 2);
		x1 = ans[i + 1] - s;
		x2 = ans[i + 1] + s;
		if ( max(x1, max(ans[i + 1], ans[i + 2])) - min(x1, min(ans[i + 1], ans[i + 2])) == p) {
			ans[i] = x1;
		} 
		if ( max(x2, max(ans[i + 1], ans[i + 2])) - min(x2, min(ans[i + 1], ans[i + 2])) == p) {
			ans[i] = x2;
		} 
		
	}
	ans[lo + 1] = n - query(lo, lo + 1); 
	for ( i = lo + 2; i <= n; i ++) {
		s = query(i - 1, i);
		p = query(i - 2, i);
		x1 = ans[i - 1] - s;
		x2 = ans[i - 1] + s;
		if ( x1 >= 1 && x1 <= n && max(x1, max(ans[i - 1], ans[i - 2])) - min(x1, min(ans[i - 1], ans[i - 2])) == p) {
			ans[i] = x1;
		} 
		if ( x2 >= 1 && x2 <= n && max(x2, max(ans[i - 1], ans[i - 2])) - min(x2, min(ans[i - 1], ans[i - 2])) == p) {
			ans[i] = x2;
		} 
		
	}
	for (i = 1; i <= n; i ++) answer(ans[i], i);

}
/*
int main() {
	int n;
	
	cin >> n;
	
	for (int i = 1; i <= n; i ++) cin >> a[i];
	solve(n);
}
*/

Compilation message (stderr)

xylophone.cpp:5:7: error: expected nested-name-specifier before 'int'
    5 | using int = long long;
      |       ^~~