题目 2114:
信息学奥赛一本通T1173-阶乘和
时间限制: 2s
内存限制: 192MB 提交: 2481 解决: 722
题目描述
用高精度计算出S=1!+2!+3!+…+n!(n≤50),其中“!”表示阶乘,例如:5!=5×4×3×2×1。
输入正整数n,输出计算结果S。
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