题解 | #skew数#
skew数
https://www.nowcoder.com/practice/5928127cc6604129923346e955e75984
#include<cstdio>
#include<string>
#include<math.h>
using namespace std;
int main(){
char arr[100];
while( scanf("%s",arr) != EOF){
string buf = arr;
int totalsum = 0;
for (unsigned i = 0; i < buf.size(); ++i) {
int num = buf[i] - '0';
totalsum = totalsum + num * (pow(2,buf.size()-i) - 1);
}
printf("%d\n",totalsum);
}
}
