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Adventures In Moving:PartIV

ด ฌธ œŠ”

ธธฐ„:A(A,B,C), „ณตฅ :‚ฎŒ(‚ฎŒ,ณดํ†ต,†’Œ),  ˆฒจ:3(1~4)

About AdventuresInMoving:PartIV

›Œํ„ฃจ—„œ Œ€„‹œกœ ด‚ฌ € คณ  ํ•˜Š”ฐ, ด‚ฟง ํŠธŸญ„ Œ ค„œ ฐˆŒ ƒฐ ค‘ด‹ค. ทธŸฐฐ š”ฆ˜ ธฐ„ ฐ’ด ํ•˜„ „‹ธ„œ €Š”ฐ ธฐ„ ฐ’ด –งˆ  •„ “ค€ ฆฌ „‚ฐํ•ดณดณ ž ํ•œ‹ค.

ด ํŠธŸญ€ 1ํ‚ฌกœธํ„ €Š” ฐ 1ฆฌํ„˜ ธฐ„ด ํ•„š”ํ•˜‹ค. ธฐ„ํ†ต€ 200ฆฌํ„‹ค. ›Œํ„ฃจ—„œ ํŠธŸญ„ Œฆด •ŒŠ” ธฐ„ํ†ตด  ˆฐ˜งŒํ ฐจ žˆ‹ค. ‚˜ค‘— Œ€„‹œ—„œ ฐจ ฐ˜‚ฉํ•  •Œ„ ธฐ„€  ˆฐ˜ ดƒ „›Œ †“•„• ํ•œ‹ค. ทธ ‡ฒŒ ํ•˜€ •Šœฉด  Œํƒˆ ํšŒ‚ฌ— ํ›จ”ฌ „‹ „šฉ„ €ถˆํ•ด• ํ•œ‹ค. ธฐ„ ฐ’€ ตœŒ€ํ•œ •„ณ  ‹ถ€งŒ, ทธ ‡‹คณ  ํ•ด„œ ธธ œ„—„œ ธฐ„ด ฐ”‹ฅ‚˜„œ ฉˆถฐ„œŠ” € —†„ก ํ•ด• ํ•œ‹ค.

Input

ฒซ „—Š” ํ…ŒŠคํŠธ €ดŠค˜ ฐœˆ˜ ‚˜ํƒ€‚ดŠ” –‘˜  •ˆ˜€ ž… ฅ˜ฉฐ, ทธ ‹คŒ „€ ˆ „ด‹ค. ฐ ํ…ŒŠคํŠธ €ดŠคŠ”  •ˆ˜งŒœกœ ตฌ„œ‹ค. ฒซฒˆงธ  •ˆ˜Š” ›Œํ„ฃจ—„œ Œ€„‹œŒ€˜ ฆฌ ํ‚ฌกœธํ„‹จœ„กœ ํ‘œ‹œํ•œ ฒƒœกœ, ตœŒ€ 10,000ด‹ค. ทธ ฐ‘œกœŠ” ถœฐœ€กœ€„ฆฌ€ €Œšด ฒƒ€„ ฒƒ ˆœ„œกœ, œ †Œ— Œ€ํ•œ  •ณด€ ž… ฅ˜ฉฐ, ตœŒ€ 100ฐœŒ€ ž… ฅ  ˆ˜ žˆ‹ค. ฐ œ †Œ— Œ€ํ•ด ›Œํ„ฃจกœ€„˜ ฆฌ(ํ‚ฌกœธํ„‹จœ„)™€ ํœ˜ฐœœ  1ฆฌํ„‹ €ฒฉ(0.1„ํŠธ ‹จœ„)ด ž… ฅœ‹ค. ฆฌํ„‹ ํœ˜ฐœœ  ฐ’€ ตœŒ€ 2,000(ฆ‰ 200„ํŠธ = 2‹ฌŸฌ)ด‹ค. „œกœ ‹คฅธ ํ…ŒŠคํŠธ €ดŠค ‚ฌด—Š” ˆ „ด ž… ฅœ‹ค.

output

ฐ ํ…ŒŠคํŠธ €ดŠค— Œ€ํ•ด ›Œํ„ฃจ—„œ Œ€„‹œŒ€ €Š” ฐ “œŠ” —ฐฃŒ„˜ ตœ†Œ ฐ’„ ถœ ฅํ•œ‹ค. ฌธ œ˜  œ•ฝกฐ— ”ฐ •Œ ›Œํ„ฃจ—„œ Œ€„‹œŒ€ ฐˆ ˆ˜ —†œฉด "Impossible"ดณ  ถœ ฅํ•œ‹ค. „œกœ ‹คฅธ ํ…ŒŠคํŠธ €ดŠค— Œ€ํ•œ ฒฐ ‚ฌด—Š” ˆ „„ ถœ ฅํ•œ‹ค.

Sample Input

~cpp 
1

500
100 999
150 888
200 777
300 999
400 1009
450 1019
500 1399

Sample Output

~cpp 
450550

ํ’€ด

ž‘„ž ‚ฌšฉ–ธ–ด ฐœฐœ‹œ„ ฝ”“œ
ฌธณดฐฝ C++ 2 AdventuresInMoving:PartIV/ฌธณดฐฝ
€ƒ„ C++ 2 AdventuresInMoving:PartIV/€ƒ„

“ฐ ˆ“œ

Œ. ‚˜ค‘— Œ€„‹œ—„œ ฐจ ฐ˜‚ฉํ•  •Œ„ ธฐ„€  ˆฐ˜ ดƒ „›Œ †“•„• ํ•œ‹ค. —ฌธฐ„œ  ˆฐ˜ ดƒดŠ” กฐ— ˜ ํ•˜€ •Šœฉด •ˆฉ‹ˆ‹ค. -- ณดฐฝ

Greedyํ•œ „ ํƒด •ˆ˜Š” ฐ˜€

œ„˜ ํ…ŒŠคํŠธ €ดŠค ณดฉด ฒ˜Œ—Š” ฆฌ€ 100ธ œ †Œ— ฌดกฐ€•ํ•ฉ‹ˆ‹ค. ทธŸฌฉด ธฐ„€ 0ด ˜ณ , Šคํ„””•Œ งํ•œ ฐฉฒ•œกœ ํ•˜ฉด •ž˜ 200Œ€ ‚ดํ”ณ , €žฅ ž‘€ €ฒฉด žˆŠ” ณณธ (200, 777) Œ€ ฐˆ ˆ˜ žˆŠ” ธฐ„ 100„ „ณ  ถœฐœํ•ฉ‹ˆ‹ค. ทธŸฌ‚˜ —ฌธฐ„œ ‚ดํŽดณดฉด ตœ ˜ ํ•ดŠ” —ฌธฐ„œ 50งŒํ˜ ธฐ„งŒ „ณ , 150˜ € —„œ ˜ 50˜ ธฐ„„ „–ด„œ (200,777)— €Š” ฒฝšฐž…‹ˆ‹ค. -- ณดฐฝ
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ฌธ œ„ฅ˜ / ฒฝ‹œŒ€ํšŒ€„ฐ˜
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