生成平均值为2780的78个随机数（范围1940-4400）

[ 2075, 2168, 2364, 2387, 2502, 2584, 2602, 2611, 2655, 2678, 2723, 2795, 2831, 2845, 2863, 2887, 2901, 2927, 2972, 2990, 3016, 3028, 3066, 3087, 3112, 3130, 3151, 3167, 3186, 3208, 3226, 3252, 3268, 3291, 3310, 3337, 3356, 3378, 3413, 3427, 3461, 3478, 3502, 3531, 3549, 3578, 3602, 3617, 3643, 3668, 3683, 3709, 3731, 3763, 3791, 3817, 3834, 3864, 3889, 3914, 3952, 3974, 4000, 4029, 4051, 4080, 4102, 4131, 4158, 4182, 4207, 4223, 4252, 4271, 4299, 4329, 4343, 4380, 4399 ]