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求阶乘1！+2！+3！+...+N!=

A dice game描述One day, boy A and girl B are playing a dice game. First, they write a number between 1~6 in a piece of paper, and then roll the dice. The one whose number is closer to the number of the dice will win this game. For example, A wins if |a

Line up in the canteen描述One day, there is a kind of new delicious food from one of the windows in the canteen. All students want to have a taste. Therefore, they all go to this window to line up and form a sequence. We need to simplify this sequence. F

1、先来实现计算某个数的位数下面是代码：#include<iostream>using namespace std;int main() { int num = 0; while (cin >> num) { int m = 0; int flag = 1; while (flag) { num = num / 10; m++; if (num == 0) { flag = 0; } } cout <&l