/in/foo.cc: In function 'int main()':
/in/foo.cc:76:40: warning: value computed is not used [-Wunused-value]
  if(dp[0][0] == mx) ( sum += p[0][0] ) % mod;
                     ~~~~~~~~~~~~~~~~~~~^~~~~
/in/foo.cc:77:40: warning: value computed is not used [-Wunused-value]
  if(dp[0][1] == mx) ( sum += p[0][1] ) % mod;
                     ~~~~~~~~~~~~~~~~~~~^~~~~