Problems/Favor/task.html

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  <p>Carl asks you to count the sum of the first <strong>k</strong> natural numbers. Read <strong>k</strong> from the input, then add up numbers from <strong>1</strong> to <strong>k</strong> and print your answer.</p>
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</html><br><b>Sample Input:</b><br>18<br><b>Sample Output:</b><br>171<br><br><br><font color="gray">Memory limit: 256 MB</font><br><font color="gray">Time limit: 15 seconds</font><br><br>
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