Submission #1228019

#	Time	Username	Problem	Language	Result	Execution time	Memory
1228019		jfioashfn333	Cyberland (APIO23_cyberland)	C++20	Compilation error	0 ms	0 KiB

cyberland

#include <iostream>
#include <algorithm>
#include <vector>
#include <math.h>
#include <cmath>
#include <cstring>
#include <set>
#include <queue>
#define int long long
#define ff first
#define ss second
#define pb push_back
#define pp pop_back
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define r0 return 0
using namespace std;
const int N = 1e6 + 5, M = 5001, MOD = 998244353, modu = 1e9 + 7;

int n, m, k, h;
int a[N];
vector<pii> g[N];
vector<int> x, y, z;

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    
    cin >> n >> m >> k >> h;
    for (int i = 0; i < n; i++) cin >> a[i];
    
    x.resize(m); y.resize(m); z.resize(m);
    
    for (int i = 0; i < m; i++) {
        cin >> x[i] >> y[i] >> z[i];
        g[x[i]].pb({y[i], z[i]});
        g[y[i]].pb({x[i], z[i]});
    }

    vector<int> d(n, 1e18);
    d[0] = 0;
    priority_queue<pii, vector<pii>, greater<>> q;
    q.push({0, 0});

    while (!q.empty()) {
        auto [w, u] = q.top(); q.pop();
        if (w > d[u]) continue;
        for (auto [v, c] : g[u]) {
            int nw = d[u] + c;
            if (a[v] == 0) nw = 0;
            if (nw < d[v]) {
                d[v] = nw;
                q.push({nw, v});
            }
        }
    }

    if (d[h] == 1e18) cout << -1 << endl;
    else cout << d[h] << endl;
    
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccvxrL8H.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccfzwWOW.o:cyberland.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccvxrL8H.o: in function `main':
grader.cpp:(.text.startup+0x71e): undefined reference to `solve(int, int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status