解题思路:
注意事项:
参考代码:
#include <iostream> #include <stdio.h> #include <string> #include <math.h> #include <algorithm> using namespace std; char Map[] = {'1', '0', 'x', '9', '8', '7', '6', '5', '4', '3', '2'}; int main(void) { string id; cin >> id; id.insert(6, "19"); int num = 0; num += (id[0] - '0')*7; num += (id[1] - '0')*9; num += (id[2] - '0')*10; num += (id[3] - '0')*5; num += (id[4] - '0')*8; num += (id[5] - '0')*4; num += (id[6] - '0')*2; num += (id[7] - '0')*1; num += (id[8] - '0')*6; num += (id[9] - '0')*3; num += (id[10] - '0')*7; num += (id[11] - '0')*9; num += (id[12] - '0')*10; num += (id[13] - '0')*5; num += (id[14] - '0')*8; num += (id[15] - '0')*4; num += (id[16] - '0')*2; num %= 11; id += Map[num]; cout << id << endl; return 0; }
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