foo.cc: In function 'void init(int, int, int, int)':
foo.cc:26:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
                 if (j==k) continue;str="";
                 ^~
foo.cc:26:36: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
                 if (j==k) continue;str="";
                                    ^~~
foo.cc: In function 'int main()':
foo.cc:41:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d%d%d",&l,&r,&s,&t,&q);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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