foo.cc:6: warning: ignoring '#pragma GCC optmize' [-Wunknown-pragmas]
    6 | #pragma GCC optmize("2,3,Ofast,inline")
      | 
foo.cc: In function 'long long int query(long long int, long long int, long long int)':
foo.cc:55:95: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   55 |                                 for(int i=1;i<=n;i++)if(L[v]<=dfn[i]&&dfn[i]<=R[v]&&(anc[x][i]&&anc[i][lca]||anc[y][i]&&anc[i][lca]||anc[i][x]||anc[i][y]))sm1=(sm1+a[i])%mod;
      |                                                                                      ~~~~~~~~~^~~~~~~~~~~~~

Found 50 testcases.
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