/in/foo.cc:1:18: warning: extra tokens at end of #include directive
 #include<cstdio> #include<algorithm> #define N 100010 #define lls long long using namespace std; lls n,c[N],m,p1,s1,s2,ans1,ans2,mins,mark; int main() {     scanf("%lld",&n);     for(lls i=1;i<=n;i++)       scanf("%lld",&c[i]);     scanf("%lld%lld%lld%lld",&m,&p1,&s1,&s2);     c[p1]+=s1;     for(lls i=1;i<m;i++)       ans1+=c[i]*(m-i);     for(lls i=m+1;i<=n;i++)       ans2+=c[i]*(i-m);     mark=0;     mins=1e19;     for(lls i=1;i<m;i++)     {         if(abs(ans1+s2*(m-i)-ans2)<mins)         {             mark=i;             mins=abs(ans1+s2*(m-i)-ans2);         }     }     for(lls i=m+1;i<=n;i++)     {         if(abs(ans1-ans2-s2*(i-m))<mins)         {             mark=i;             mins=abs(ans1-ans2-s2*(i-m));         }     }     if((mins==abs(ans1-ans2)&&mark<m)||mins<abs(ans1-ans2))        printf("%lld",mark);     else printf("%lld",m); }
                  ^
/usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status