Language: C++

#import<cstdio>
#define k ff
#define r(a) for(int i=0;i<a;i++)
#define s(a) scanf("%d",a);
#define m(a,b) a<b?a:b
int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}

Compiler output:
a.cc:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated]
    1 | #import<cstdio>
      |  ^~~~~~
a.cc:2:11: error: 'ff' was not declared in this scope
    2 | #define k ff
      |           ^~
a.cc:6:13: note: in expansion of macro 'k'
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |             ^
a.cc:2:11: error: 'ff' was not declared in this scope
    2 | #define k ff
      |           ^~
a.cc:6:18: note: in expansion of macro 'k'
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |                  ^
a.cc:2:11: error: 'ff' was not declared in this scope
    2 | #define k ff
      |           ^~
a.cc:6:23: note: in expansion of macro 'k'
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |                       ^
a.cc:6:26: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |                          ^~~~
a.cc: In function 'int main()':
a.cc:6:49: error: 'd' was not declared in this scope
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |                                                 ^
a.cc:4:25: note: in definition of macro 's'
    4 | #define s(a) scanf("%d",a);
      |                         ^
a.cc:6:59: error: 'c' was not declared in this scope
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |                                                           ^
a.cc:4:25: note: in definition of macro 's'
    4 | #define s(a) scanf("%d",a);
      |                         ^
a.cc:6:67: error: 'p' was not declared in this scope
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |                                                                   ^
a.cc:6:88: error: 'p' was not declared in this scope
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |                                                                                        ^
a.cc:6:107: error: 'c' was not declared in this scope
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |                                                                                                           ^
a.cc:5:18: note: in definition of macro 'm'
    5 | #define m(a,b) a<b?a:b
      |                  ^
a.cc:6:114: error: 'd' was not declared in this scope
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |                                                                                                                  ^
a.cc:5:18: note: in definition of macro 'm'
    5 | #define m(a,b) a<b?a:b
      |                  ^
a.cc:6:138: error: 'p' was not declared in this scope
    6 | int w,n,m,c[k],d[k],p[k];main(){s(&n)s(&m)r(n)s(d+i)r(m)s(c+i)r(n)p[i]=1e9;r(m*n)w=i%n,p[w]=m(p[w],p[w+1]+c[i/n]*d[n-w-1]);printf("%d\n",p[0]);}
      |                                                                                                                                          ^