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#include <bits/stdc++.h>
using namespace std;
const int N = 110;
char a[N];
int main() {
scanf("%s", a + 1); //输入abcdef，共6个字符,放过下标为0的位置，从下标为1开始
int len = strlen(a + 1); //含义：从a下标偏移为1开始，计算到末尾\0的长度
printf("%d", len); //输出答案：6,理解：让从1开始，到末尾，尾巴在哪里自己找，计算返回长度
return 0;
}
