Submission #1177437

#	Time	Username	Problem	Language	Result	Execution time	Memory
1177437		stdfloat	Rainforest Jumps (APIO21_jumps)	C++20	Compilation error	0 ms	0 KiB

jumps

#include <bits/stdc++.h>
#include "jumps.h"
#include "stub.cpp"
using namespace std;

vector<int> H, L, R;

void init(int n, vector<int> h) {
	H = h;
	
	stack<int> s;
	L = R = vector<int>(n);
	for (int i = 0; i < n; i++) {
		while (!s.empty() && h[s.top()] < h[i]) s.pop();

		L[i] = (s.empty() ? -1 : s.top());

		s.push(i);
	}

	while (!s.empty()) s.pop();

	for (int i = n - 1; i >= 0; i--) {
		while (!s.empty() && h[i] > h[s.top()]) s.pop();

		R[i] = (s.empty() ? -1 : s.top());

		s.push(i);
	}
}

int minimum_jumps(int A, int B, int C, int D) {
	assert(A == B && C == D);

	int cnt = 0, x = A;
	while (x != C) {
		bool tr = false;
		if (~L[x] && (!~R[x] || H[L[x]] > H[R[x]]) && H[L[x]] <= H[C]) {
			x = L[x];
			tr = true;
		}
		else if (~R[x] && (!~L[x] || H[L[x]] < H[R[x]]) && H[R[x]] <= H[C]) {
			x = R[x];
			tr = true;
		}

		if (!tr) break;

		cnt++;
	}

	return (x == C ? cnt : -1);
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccBFaJpS.o: in function `main':
stub.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccnykR95.o:jumps.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status