You have three mighty rivers that are raging down to three beautiful cities. You have 300 people each holding a single rock. 100 people straight off the bat are too young, too injured or sick, or too indifferent to hold the rocks they were given. They drop their rocks immediately. You have three mighty rivers raging down upon three beautiful cities, and only with a 101 rocks or more will you be able to save one of the cities from the wrath of the mighty river. 95 people feel the blue city is the most beautiful, so they throw their rocks in to save the blue city. 95 people feel the red city is the most beautiful, so they throw their rocks in to save the red city. 10 people felt that neither the red city nor the blue city was beautiful enough, so they threw their rocks into the third river.
What was gained by the last 10 people throwing their rocks into the third river?