24 lines
624 B
C++
24 lines
624 B
C++
#include <iostream>
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#include <string>
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#include <vector>
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int main(int argc, char **argv) {
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std::vector<int> vals;
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for (std::string line; std::getline(std::cin, line);) {
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int val = std::stoi(line, nullptr, 10);
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auto size = vals.size();
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for (std::size_t i = 0; i < size; ++i) {
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int64_t v1 = vals[i];
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for (std::size_t j = 0; j < i; ++j) {
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int64_t v2 = vals[j];
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if (v1 + v2 + val == 2020) {
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std::cout << v1 << " * " << v2 << " * " << val << " = "
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<< v1 * v2 * std::int64_t(val) << "\n";
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}
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}
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}
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vals.push_back(val);
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}
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return 0;
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} |