foo.cc:6:1: error: 'string' does not name a type
    6 | string expr, name; VI I;
      | ^~~~~~
foo.cc:6:20: error: 'VI' does not name a type
    6 | string expr, name; VI I;
      |                    ^~
foo.cc: In function 'void out(int)':
foo.cc:10:17: error: 'I' was not declared in this scope
   10 |     if (k == SZ(I)) cout << name;
      |                 ^
foo.cc:10:14: error: 'SZ' was not declared in this scope
   10 |     if (k == SZ(I)) cout << name;
      |              ^~
foo.cc:10:21: error: 'cout' was not declared in this scope; did you mean 'out'?
   10 |     if (k == SZ(I)) cout << name;
      |                     ^~~~
      |                     out
foo.cc:10:29: error: 'name' was not declared in this scope
   10 |     if (k == SZ(I)) cout << name;
      |                             ^~~~
foo.cc:12:9: error: 'printf' was not declared in this scope
   12 |         printf("op(%d,",I[k]);out(k+1);printf(")");
      |         ^~~~~~
foo.cc:1:1: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | 
foo.cc: In function 'void gao(int, int, int)':
foo.cc:25:17: error: 'I' was not declared in this scope
   25 |     if (k == SZ(I)){
      |                 ^
foo.cc:25:14: error: 'SZ' was not declared in this scope
   25 |     if (k == SZ(I)){
      |              ^~
foo.cc:26:13: error: 'i' was not declared in this scope
   26 |         FOR(i,l,r)putchar(expr[i]);puts("");
      |             ^
foo.cc:26:9: error: 'FOR' was not declared in this scope
   26 |         FOR(i,l,r)putchar(expr[i]);puts("");
      |         ^~~
foo.cc:26:36: error: 'puts' was not declared in this scope
   26 |         FOR(i,l,r)putchar(expr[i]);puts("");
      |                                    ^~~~
foo.cc:30:36: error: 'VII' was not declared in this scope
   30 |         int c=0;char op='(';int ll;VII cut;
      |                                    ^~~
foo.cc:31:13: error: 'i' was not declared in this scope
   31 |         FOR(i,l,r) if(expr[i]=='('){if (!c++)ll=i+1;}
      |             ^
foo.cc:31:9: error: 'FOR' was not declared in this scope
   31 |         FOR(i,l,r) if(expr[i]=='('){if (!c++)ll=i+1;}
      |         ^~~
foo.cc:32:9: error: 'else' without a previous 'if'
   32 |         else if (expr[i]==')'){if (!--c)cut.PB(MP(ll,i));}
      |         ^~~~
foo.cc:32:18: error: 'expr' was not declared in this scope
   32 |         else if (expr[i]==')'){if (!--c)cut.PB(MP(ll,i));}
      |                  ^~~~
foo.cc:32:41: error: 'cut' was not declared in this scope; did you mean 'out'?
   32 |         else if (expr[i]==')'){if (!--c)cut.PB(MP(ll,i));}
      |                                         ^~~
      |                                         out
foo.cc:32:48: error: 'MP' was not declared in this scope
   32 |         else if (expr[i]==')'){if (!--c)cut.PB(MP(ll,i));}
      |                                                ^~
foo.cc:37:17: error: 'expr' was not declared in this scope
   37 |             if (expr[l]=='(') gao(k+1,cut[I[k]].fi,cut[I[k]].se);
      |                 ^~~~
foo.cc:37:39: error: 'cut' was not declared in this scope; did you mean 'out'?
   37 |             if (expr[l]=='(') gao(k+1,cut[I[k]].fi,cut[I[k]].se);
      |                                       ^~~
      |                                       out
foo.cc:41:16: error: expected ';' before 'cut'
   41 |             VII cut; FOR(i,l,r) if(expr[i]=='(')++c;
      |                ^~~~
      |                ;
foo.cc:42:13: error: 'else' without a previous 'if'
   42 |             else if (expr[i]==')')--c;
      |             ^~~~
foo.cc:42:22: error: 'expr' was not declared in this scope
   42 |             else if (expr[i]==')')--c;
      |                      ^~~~
foo.cc:44:39: error: 'cut' was not declared in this scope; did you mean 'out'?
   44 |                 if (f(expr[i])==f(op))cut.PB(MP(l,i)),l=i+1;
      |                                       ^~~
      |                                       out
foo.cc:44:46: error: 'MP' was not declared in this scope
   44 |                 if (f(expr[i])==f(op))cut.PB(MP(l,i)),l=i+1;
      |                                              ^~
foo.cc:46:13: error: 'cut' was not declared in this scope; did you mean 'out'?
   46 |             cut.PB(MP(l,r));
      |             ^~~
      |             out
foo.cc:46:20: error: 'MP' was not declared in this scope
   46 |             cut.PB(MP(l,r));
      |                    ^~
foo.cc: In function 'int main()':
foo.cc:55:28: error: 'stdin' was not declared in this scope
   55 |     freopen("in.txt", "r", stdin);
      |                            ^~~~~
foo.cc:55:28: note: 'stdin' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
foo.cc:55:5: error: 'freopen' was not declared in this scope
   55 |     freopen("in.txt", "r", stdin);
      |     ^~~~~~~
foo.cc:59:12: error: 'cin' was not declared in this scope
   59 |     while (cin >> expr){
      |            ^~~
foo.cc:59:19: error: 'expr' was not declared in this scope
   59 |     while (cin >> expr){
      |                   ^~~~
foo.cc:60:34: error: 'name' was not declared in this scope
   60 |         int p = expr.find(":="); name = expr.substr(0,p).c_str();
      |                                  ^~~~
foo.cc:61:9: error: 'printf' was not declared in this scope
   61 |         printf("Expression %s:\n",name.c_str());expr.erase(expr.begin(),expr.begin()+p+2);
      |         ^~~~~~
foo.cc:61:9: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
foo.cc:62:9: error: 'Rush' was not declared in this scope
   62 |         Rush{
      |         ^~~~

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