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#include <charconv>
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#include <iostream>
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#include <cstring>
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using namespace std;
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int main(int argc, char **argv)
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{
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size_t r=0;
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const char *begin = argv[1];
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const char *end = begin + strlen(begin);
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from_chars(begin, end, r);
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cout << r << '\n';
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return 0;
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}
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