GRUPO MC504
RA: 184423 - Letícia Lopes Mendes da Silva
RA: 238001 - Luísa de Melo Barros Penze
RA: 244808 - Renan Matheus da Silva Florencio
RA: 186087 - Gabriela Martins Jacob
RA: 260511 - Igor Engelmann Batista
gcc -pthread rivercrossing.c -Wno-pointer-to-int-cast -Wno-int-to-pointer-cast