# for i in $(seq 1 5); do time ./find_max_18.o; done
        1.23 real         0.84 user         0.34 sys
        1.23 real         0.78 user         0.39 sys
        1.23 real         0.87 user         0.31 sys
        1.25 real         0.94 user         0.26 sys
        1.23 real         0.72 user         0.46 sys