/in/foo.cc:8:1: error: expected initializer before 'int'
 int min1(int a,int b){
 ^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:17:4: error: 'a' was not declared in this scope
    a[j][j+i]=0x7ffffff;
    ^
/in/foo.cc:19:64: error: 'min1' was not declared in this scope
     a[j][j+1]=min1(a[j][j+i],a[j][k]+a[k][j+i]+s[k]*s[j]*s[j+i]);
                                                                ^
/in/foo.cc:23:8: error: 'a' was not declared in this scope
  cout<<a[0][n-1]<<endl;
        ^