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A and B are preparing themselves for programming contests.To train their logical thinking and solve problems better, A and B decided to play chess. Du... 阅读全文
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Vasya has found a strange device. On the front panel of a device there are: a red button, a blue button and a display showing some positive integer. A... 阅读全文
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A word or a sentence in some language is called apangramif all the characters of the alphabet of this language appear in itat least once. Pangrams are... 阅读全文
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#include#includeusing namespace std;int main(){ long long begin,end,mid,k; long long n,m; begin = 1;end = 100000000; scanf("%d%d",&n,&m)... 阅读全文
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Ford Prefect got a job as a web developer for a small company that makes towels. His current work task is to create a search engine for the website of... 阅读全文