C语言2.8

Time Limit: 1000ms
Memory Limit: 32768KB
64-bit integer IO format: %lld      Java class name: Main

Description

求1+2+3+…+100的值。

Input

Output

输出题目描述中表达式的值。请注意行尾输出换行。

Sample Input

Sample Output

5050

Author

Admin

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