#include<bits/stdc++.h>
#include <string.h>
#include <stdlib.h>
#define ll long long
using namespace std;
long long dfghjkl;
long long tem,a,e,d,g=0,c,h=0,k[300011],me[4001230],m,t[1234567],n,i,j,f,mi,ha,he,ko,ka;
string o,y,x[123456],z;
long long ul,ma;
char mr,taxi;
long long bb,b;
double xxx;
pair<ll,long long> zxdfghj;
vector<long long> q,kii;
map<long long,long long> maa;
int main() {
cout<<1<<endl;
}
Compilation message
/usr/bin/ld: /tmp/ccr1mjoL.o: in function `main':
stub.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccjM0GRI.o:longesttrip.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccr1mjoL.o: in function `main':
stub.cpp:(.text.startup+0x95): undefined reference to `longest_trip(int, int)'
collect2: error: ld returned 1 exit status
