1、在会议未开始时，假设所有个体在刚进入会场时都会去一趟卫生间，当个体

1. Before the meeting, assume that all individuals will go to the bathroom when they first enter the meeting place. When the individual goes to the bathroom, the status of the individual is recorded as having been to the bathroom. <br>2. Estimate the time interval for each individual to go to the bathroom next time, and calculate the time when the individual goes to the bathroom next time based on the time when each individual went to the bathroom last time. <br>3. Record the time when the individual goes to the bathroom, and then estimate the length of time the individual goes to the bathroom after the individual enters the bathroom (the time length obeys the gamma distribution, about 3 minutes). <br>4. After the individual finishes going to the bathroom, the individual continues to walk randomly from the bathroom exit (a certain coordinate range). Repeat 2~4 steps at the same time

1. When the meeting is not started, it is assumed that all individuals will go to the bathroom when they first enter the venue. When individuals go to the bathroom, their status is recorded as having been to the bathroom.<br>2. Estimate the time interval of each individual's next visit to the bathroom, and calculate the time of each individual's next visit to the bathroom according to the time of each individual's last visit to the bathroom.<br>3. Record the time when the individual goes to the bathroom, and estimate the time when the individual goes to the bathroom after entering the bathroom (the time follows the gamma distribution, about 3 minutes).<br>4. After the individual goes to the toilet, the individual continues to walk randomly from the toilet exit (a certain coordinate range). Repeat steps 2 to 4 at the same time

1. When the meeting is not started, it is assumed that all individuals will go to the bathroom when they first enter the meeting place, and when they go to the bathroom, their status will be recorded as having been to the bathroom. 2. Estimate the time interval for each individual to go to the bathroom next time, and calculate the time for each individual to go to the bathroom next time according to the time for each individual to go to the bathroom last time. 3. Record the time when an individual goes to the bathroom, and then estimate the time when the individual goes to the bathroom after entering the bathroom (the time obeys the gamma distribution, about 3 minutes). 4. After the individual goes to the bathroom, the individual continues to walk randomly from the bathroom exit (a certain coordinate range). Repeat 2~4 steps at the same time