Submission #478171

#	Time	Username	Problem	Language	Result	Execution time	Memory
478171		khoabright	Rainforest Jumps (APIO21_jumps)	C++17	Compilation error	0 ms	0 KiB

jumps

#include <bits/stdc++.h>
using namespace std;

#define ff first
#define ss second
#define pii pair<int, int>
#define all(x) x.begin(), x.end()
#define rep(i, a, b) for (int i = (int)a; i <= (int)b; ++i)
#define rep1(i, a, b) for (int i = (int)a; i >= (int)b; --i)
#define mp make_pair

const int N = 2e5 + 5;

int L[N], R[N], h[N];
int n;

void cal_LR() {
    rep(i, 1, n) {
        rep1(j, i - 1, 1) if (h[j] > h[i]) {
            L[i] = j;
            break;
        } 
        rep(j, i + 1, n) if (h[j] > h[i]) {
            R[i] = j;
            break;
        }
    }
}

int minimum_jumps(int a, int b, int c, int d) {
    queue<pii> q;
    vector<bool> vst(n + 1);
    vst[0] = 1;

    rep(i, a, b) q.push({i, 0}), vst[i] = 1;

    while (!q.empty()) {
        auto [u, w] = q.front();
        //cout << "u="<<u<<'\n';
        q.pop();
        if (c <= u && u <= d) return w;
        int v = L[u];
        if (!vst[v]) {
            q.push({v, w + 1});
            vst[v] = 1;
        }
        v = R[u];
        if (!vst[v]) {
            q.push({v, w + 1});
            vst[v] = 1;
        }
    }

    return -1;
}

void init(int sz, int array[]) {
    n = sz;
    rep(i, 1, n) h[i] = array[i - 1];   
    cal_LR();
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    // int x; cin >> x;
    // int array[10];
    // rep(i, 1, x) cin >> array[i - 1];
    // init(x,array);
    
    // rep(i, 1, n) cout << h[i] << ' ';
    // cout << '\n';
    // rep(i, 1, n) cout << L[i] << ' ' << R[i]<< '\n';

    // int q; cin >> q;
    // while (q--) {
    //     int A, B, C, D;
    //     cin >> A >> B >> C >> D;
    //     cout << minimum_jumps(A + 1, B + 1, C + 1, D + 1) << '\n';
    // }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccVvCoTQ.o: in function `main':
stub.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccJHop3N.o:jumps.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccVvCoTQ.o: in function `main':
stub.cpp:(.text.startup+0x177): undefined reference to `init(int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status