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As a traditional event in the past years, join the IOI 2026 Prediction Game!
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想要变强
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#14559: SevenDawns
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#14559: Seventeen_17
Accepted: : 4
$$\oint_{\substack{L}} Pdx+Qdy = \iint_{\substack{S}} (\frac {\partial Q} {\partial x} - \frac {\partial P} {\partial y})dxdy$$
#14559: sgt
Accepted: : 4
#14559: Shahriyor
Accepted: : 4
#14559: Shakil17
Accepted: : 4
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Accepted: : 4