/in/foo.cc: In function 'int main()':
/in/foo.cc:56:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    if(left<1)left=1;if(right>M)right=M;
    ^~
/in/foo.cc:56:21: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
    if(left<1)left=1;if(right>M)right=M;
                     ^~