阅读程序写结果：
#include<iostream>using namespace std;int main(){ string ch; int a[200]; int b[200]; int n, i, t, res; cin >> ch; n = ch.length(); for (i = 0; i < 200; i++) b[i] = 0; for (i = 1; i <= n; i++) { a[i] = ch[i - 1] - '0'; b[i] = b[i - 1] + a[i]; } res = b[n]; t = 0; for (i = n; i > 0; i--) { if (a[i] == 0) t++; if (b[i - 1] + t < res) res = b[i - 1] + t; } cout << res << endl; return 0;}输入：1001101011001101101011110001 输出：_________