View Compilation Error

0_0_39415144_10220.cpp: In function 'void init()':
0_0_39415144_10220.cpp:21:25: error: 'stmin' was not declared in this scope; did you mean 'stdin'?
   21 |                         stmin[i][j] = min(stmin[i][j - 1], stmin[i + (1 << (j - 1))][j - 1]);
      |                         ^~~~~
      |                         stdin