/in/foo.cc: In function 'int main()':
/in/foo.cc:8:12: warning: left operand of comma operator has no effect [-Wunused-value]
    8 |     if (s+n>=60,m+1>=60,h+1>=24)
      |         ~~~^~~~
/in/foo.cc:8:20: warning: right operand of comma operator has no effect [-Wunused-value]
    8 |     if (s+n>=60,m+1>=60,h+1>=24)
      |                 ~~~^~~~
/in/foo.cc:19:16: warning: left operand of comma operator has no effect [-Wunused-value]
   19 |     else if(s+n>60,m+(s+n)%60<60)
      |             ~~~^~~