foo.cc:10:15: error: empty character constant
10 | while(ch<'' || ch>''){if(ch=='-')f=-;ch=getchar();}
| ^~
foo.cc:10:24: error: empty character constant
10 | while(ch<'' || ch>''){if(ch=='-')f=-;ch=getchar();}
| ^~
foo.cc:11:16: error: empty character constant
11 | while(ch>='' && ch<=''){x=x*+ch-'';ch=getchar();}
| ^~
foo.cc:11:26: error: empty character constant
11 | while(ch>='' && ch<=''){x=x*+ch-'';ch=getchar();}
| ^~
foo.cc:11:38: error: empty character constant
11 | while(ch>='' && ch<=''){x=x*+ch-'';ch=getchar();}
| ^~
foo.cc: In function 'int read()':
foo.cc:9:12: error: expected primary-expression before ',' token
9 | int x=,f=;char ch=getchar();
| ^
foo.cc:10:39: error: 'f' was not declared in this scope
10 | while(ch<'' || ch>''){if(ch=='-')f=-;ch=getchar();}
| ^
foo.cc:10:42: error: expected primary-expression before ';' token
10 | while(ch<'' || ch>''){if(ch=='-')f=-;ch=getchar();}
| ^
foo.cc:12:15: error: 'f' was not declared in this scope
12 | return x*f;
| ^
foo.cc: At global scope:
foo.cc:16:3: error: storage size of 'a' isn't known
16 | }a[];
| ^
foo.cc:23:3: error: storage size of 'b' isn't known
23 | }b[];
| ^
foo.cc: In function 'void DFS(int, int, int)':
foo.cc:42:16: error: expected primary-expression before ';' token
42 | for(j=;j<cnt;j++){
| ^
foo.cc:46:16: error: expected primary-expression before ',' token
46 | DFS(i+,cnt+,smm+(b[cnt].x2-b[cnt].x1)*(b[cnt].y2-b[cnt].y1));
| ^
foo.cc:46:21: error: expected primary-expression before ',' token
46 | DFS(i+,cnt+,smm+(b[cnt].x2-b[cnt].x1)*(b[cnt].y2-b[cnt].y1));
| ^
foo.cc: In function 'int main()':
foo.cc:53:12: error: expected primary-expression before ';' token
53 | for(i=;i<=n;i++){
| ^
foo.cc:56:13: error: expected primary-expression before ',' token
56 | sort(a+,a+n+,cmp);
| ^
foo.cc:56:18: error: expected primary-expression before ',' token
56 | sort(a+,a+n+,cmp);
| ^
foo.cc:57:16: error: expected primary-expression before ',' token
57 | memset(b,-,sizeof b);
| ^
foo.cc:58:10: error: expected primary-expression before ',' token
58 | DFS(,,);
| ^
foo.cc:58:11: error: expected primary-expression before ',' token
58 | DFS(,,);
| ^
foo.cc:58:12: error: expected primary-expression before ')' token
58 | DFS(,,);
| ^
foo.cc:60:6: error: return-statement with no value, in function returning 'int' [-fpermissive]
60 | return ;
| ^~~~~~
foo.cc:52:12: warning: unused variable 'j' [-Wunused-variable]
52 | int i,j;
| ^
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