题解 | 不要三句号的歪
不要三句号的歪
https://www.nowcoder.com/practice/7cbb7d96fb354f7995d9af1ccf8906b4
#include <iostream>
using namespace std;
#include<vector>
#include<string>
int main() {
string str;
cin>>str;
size_t pos = str.find_last_of(',');
long long endNum=stoll(str.substr(pos+1));//从v+1处截取n个字符，没写默认截取到末尾
long long beginNum = stoll(str.substr(0, str.find(',')));
cout<<endNum-beginNum-2<<endl;
}
// 64 位输出请用 printf("%lld")
