제출 #1190481

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1190481		SulA	밀림 점프 (APIO21_jumps)	C++20	컴파일 에러	0 ms	0 KiB

jumps

#include <bits/stdc++.h>
#include "jumps.h"
#define bitcount __builtin_popcountll
#define all(a) (a).begin(), (a).end()
using namespace std;

vector<int> adj[200000];
int dist[200000];

int bfs(vector<int> start, vector<int> end) {
    memset(dist, -1, sizeof dist);
    queue<int> q;
    for (int u : start) {
        dist[u] = 0;
        q.push(u);
    }
    while (!q.empty()) {
        int u = q.front();
        q.pop();
        for (int v : adj[u]) {
            if (dist[v] == -1) {
                dist[v] = dist[u] + 1;
                q.push(v);
            }
        }
    }
    int res = 1e9;
    for (int x : end) if (dist[x] != -1)
        res = min(res, dist[x]);

    return res == 1e9 ? -1 : res;
}

void init(int n, vector<int> h) {
    vector<int> st;
    for (int i = 0; i < n; i++) {
        while (!st.empty() && h[i] > h[st.back()])
            st.pop_back();
        if (!st.empty())
            adj[i].push_back(st.back());
        st.push_back(i);
    }
    st.clear();
    for (int i = n-1; i >= 0; i--) {
        while (!st.empty() && h[i] > h[st.back()])
            st.pop_back();
        if (!st.empty())
            adj[i].push_back(st.back());
        st.push_back(i);
    }
}

int minimum_jumps(int a, int b, int c, int d) {
    vector<int> start, end;
    for (int i = a; i <= b; i++)
        start.push_back(i);
    for (int i = c; i <= d; i++)
        end.push_back(i);
    return bfs(start, end);
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);

    init(7, {3, 2, 1, 6, 4, 5, 7});
    cout << minimum_jumps(1, 3, 5, 6);
}

컴파일 시 표준 에러 (stderr) 메시지

/usr/bin/ld: /tmp/cc7tgfTy.o: in function `main':
stub.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccx6XX8e.o:jumps.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status