#2433. 练24.2 for循环求和
练24.2 for循环求和
说明
利用for循环。计算输出$1+2+3+...+n$的和。输入格式
输入$n$。对于100%的数据,$1≤n≤100$。输出格式
如题述,之和。10
55
10
55
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