Submission #1202145

#	Time	Username	Problem	Language	Result	Execution time	Memory
1202145		ezzzay	Cyberland (APIO23_cyberland)	C++20	Compilation error	0 ms	0 KiB

cyberland

#include <cassert>
#include <cstdio>

#include <vector>
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define ll double
const int MX=3e5;
vector< pair<int,ll> >v[MX];
ll dst[MX];
void dfs(int a, int p){
	for(auto [b,c] : v[a]){
		if(b==p)continue;
		dst[b]=dst[a]+c;
		dfs(b,a);
	}
}
double solve(int N, int M, int K, int H, std::vector<int> x, std::vector<int> y, std::vector<int> c, std::vector<int> arr) {
	for(int i=0;i<N;i++){
		dst[i]=0;
		v[i].clear();
	}
	for(int i=0;i<M;i++){
		v[x[i]].pb({y[i],c[i]});
		v[y[i]].pb({x[i],c[i]});
	}
	dfs(0,-1);
	return dst[H];
}


int main() {
  int T;
  assert(1 == scanf("%d", &T));
  while (T--){
    int N,M,K,H;
    assert(4 == scanf("%d %d %d\n%d", &N, &M, &K, &H));
    std::vector<int> x(M);
    std::vector<int> y(M);
    std::vector<int> c(M);
    std::vector<int> arr(N);
    for (int i=0;i<N;i++)
      assert(1 == scanf("%d", &arr[i]));
    for (int i=0;i<M;i++)
      assert(3 == scanf("%d %d %d", &x[i], &y[i], &c[i]));
    printf("%.12lf\n", solve(N, M, K, H, x, y, c, arr));
  }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cc7GqNdD.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cczcpoox.o:cyberland.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status