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codeforce - tram

jakaria_hossain Apr 3rd, 2019 75 Never
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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define fastread()(ios_base::sync_with_stdio(false),cin.tie(NULL));
  4. int main()
  5. {
  6.     fastread();
  7.     int n,mx=0,sum=0;
  8.     cin>>n;
  9.     while(n--)
  10.     {
  11.         int a,b;
  12.         cin>>a>>b;
  13.         sum+=b;
  14.         sum-=a;
  15.         mx=max(sum,mx);
  16.     }
  17.     cout<<mx<<endl;
  18.     return 0;
  19. }
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