32 lines
634 B
C++
32 lines
634 B
C++
#include <iostream>
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#include <cmath>
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int get_digit(int num, int digit) {
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num /= static_cast<int>(std::pow(10, digit));
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// std::clog << num << " is " << digit << "->" << std::endl;
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return num % 10;
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}
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bool is_good_num(int num) {
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return get_digit(num, 0)
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- (get_digit(num, 3) + get_digit(num, 2) + get_digit(num, 1))
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> 0;
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}
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int n, ans;
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int main() {
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std::ios::sync_with_stdio(false);
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std::cin.tie(nullptr);
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std::cin >> n;
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for (int _ = 0; _ < n; _++) {
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int num;
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std::cin >> num;
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ans += is_good_num(num);
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}
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std::cout << ans << std::endl;
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return 0;
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}
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