foo.cc:40:5: error: redefinition of 'int n'
   40 | int n,x,y,num;
      |     ^
foo.cc:3:5: note: 'int n' previously declared here
    3 | int n,x,y;
      |     ^
foo.cc:40:7: error: redefinition of 'int x'
   40 | int n,x,y,num;
      |       ^
foo.cc:3:7: note: 'int x' previously declared here
    3 | int n,x,y;
      |       ^
foo.cc:40:9: error: redefinition of 'int y'
   40 | int n,x,y,num;
      |         ^
foo.cc:3:9: note: 'int y' previously declared here
    3 | int n,x,y;
      |         ^
foo.cc:41:15: error: redefinition of 'int s [105]'
   41 | int head[105],s[105],vis[105];
      |               ^
foo.cc:5:5: note: 'int s [105]' previously declared here
    5 | int s[105],d[105];
      |     ^
foo.cc:45:3: error: conflicting declaration 'node a [10005]'
   45 | } a[10005];
      |   ^
foo.cc:4:5: note: previous declaration as 'int a [105][105]'
    4 | int a[105][105],h[10005];
      |     ^
foo.cc: In function 'void work(int, int)':
foo.cc:48:12: error: request for member 'next' in 'a[num]', which is of non-class type 'int [105]'
   48 |     a[num].next=head[from];
      |            ^~~~
foo.cc:49:12: error: request for member 'u' in 'a[num]', which is of non-class type 'int [105]'
   49 |     a[num].u=from;
      |            ^
foo.cc:50:12: error: request for member 'v' in 'a[num]', which is of non-class type 'int [105]'
   50 |     a[num].v=to;
      |            ^
foo.cc: At global scope:
foo.cc:53:5: error: redefinition of 'int main()'
   53 | int main() {
      |     ^~~~
foo.cc:6:5: note: 'int main()' previously defined here
    6 | int main() {
      |     ^~~~
foo.cc: In function 'int main()':
foo.cc:74:38: error: request for member 'next' in 'a[i]', which is of non-class type 'int [105]'
   74 |         for(int i=head[h]; i; i=a[i].next) {
      |                                      ^~~~
foo.cc:75:26: error: request for member 'v' in 'a[i]', which is of non-class type 'int [105]'
   75 |             if(!vis[a[i].v]) {
      |                          ^
foo.cc:76:24: error: request for member 'v' in 'a[i]', which is of non-class type 'int [105]'
   76 |                 s[a[i].v]=s[h]+1;
      |                        ^
foo.cc:77:26: error: request for member 'v' in 'a[i]', which is of non-class type 'int [105]'
   77 |                 vis[a[i].v]=1;
      |                          ^
foo.cc:78:29: error: request for member 'v' in 'a[i]', which is of non-class type 'int [105]'
   78 |                 q.push(a[i].v);
      |                             ^
foo.cc:79:25: error: request for member 'v' in 'a[i]', which is of non-class type 'int [105]'
   79 |                 if(a[i].v==y) {
      |                         ^
foo.cc: In function 'int main()':
foo.cc:7:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
    7 |     freopen("relationship.in","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.cc:8:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
    8 |     freopen("relationship.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:56:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   56 |     scanf("%d %d %d",&n,&x,&y);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~
foo.cc:60:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   60 |             scanf("%d",&t);
      |             ~~~~~^~~~~~~~~

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Found 10 testcases.
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