foo.cc: In function 'int main()':
foo.cc:26:12: warning: overflow in conversion from 'long int' to 'int' changes value from '9223372036854775807' to '-1' [-Woverflow]
   26 | dp[i][j] = LONG_MAX;
      |            ^~~~~~~~
foo.cc:17:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   17 | scanf("%d %d %d", &width, &height, &numPipe);
      | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.cc:32:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   32 | scanf("%d %d", &deltaP[i], &deltaN[i]);
      | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.cc:34:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   34 | scanf("%d", &coord); //管道坐标
      | ~~~~~^~~~~~~~~~~~~~
foo.cc:35:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   35 | scanf("%d %d", &lowerBound[coord], &upperBound[coord]); //管道的处上下界
      | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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