50 lines
1006 B
C++
50 lines
1006 B
C++
#include <iostream>
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#include <vector>
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bool isCusip(const std::string& s) {
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if (s.size() != 9) return false;
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int sum = 0;
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for (int i = 0; i <= 7; ++i) {
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char c = s[i];
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int v;
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if ('0' <= c && c <= '9') {
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v = c - '0';
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} else if ('A' <= c && c <= 'Z') {
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v = c - '@';
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} else if (c = '*') {
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v = 36;
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} else if (c = '#') {
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v = 38;
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} else {
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return false;
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}
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if (i % 2 == 1) {
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v *= 2;
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}
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sum += v / 10 + v % 10;
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}
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return s[8] - '0' == (10 - (sum % 10)) % 10;
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}
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int main() {
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using namespace std;
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vector<string> candidates{
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"037833100",
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"17275R102",
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"38259P508",
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"594918104",
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"68389X106",
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"68389X105"
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};
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for (auto str : candidates) {
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auto res = isCusip(str) ? "correct" : "incorrect";
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cout << str.c_str() << " -> " << res << "\n";
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}
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return 0;
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}
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