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  1. #include <stdio.h> 
  2.  
  3. int main() 
  4. { 
  5.     int m, n;
  6.     printf("Nhap so nguyen m va n (m<n): ");
  7.     scanf("%d %d", &m, &n);
  8.  
  9.     int a = (n-m+1)*(m+n)/2;
  10.     printf("%d", a);
  11.     return 0;
  12.  
  13. }
Success #stdin #stdout 0s 5284KB
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2 3
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Nhap so nguyen m va n (m<n): 5
https://ideone.com/bi2drD
language:
C (gcc 8.3)
created:
81 days ago
visibility:
public

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