/in/foo.cc: In function 'int main()':
/in/foo.cc:9:29: error: incompatible types in assignment of 'long int' to 'long int [101]'
  scanf("%ld",&s[i]),f[i]=s[i];
                             ^
/in/foo.cc:17:37: error: 'w' was not declared in this scope
    f[i][j]=min(f[i+1][k],f[k+1][j])+w[i][j];
                                     ^