python-algorithm
[백준] 7523
무적김두칠
2021. 3. 19. 14:43
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n=int(input())
for i in range(n):
a, b = map(int, (input().split()))
print("Scenario #%d:" % (i + 1))
print( (b-a+1)*(a+b)//2 )
print()
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cs |
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