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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. const int N=1e5 +3;
  5. int a[N];
  6. map<int, int> mp;
  7.  
  8. int main(){
  9.  
  10.     int a, b, c, d, ans=0;
  11.     scanf("%d%d%d%d", &a, &b, &c, &d);
  12.     if(a<=c){
  13.         if(b<=c){
  14.             ans=0;
  15.         }
  16.         else if(b>c&&b<=d){
  17.             ans=b-c;
  18.         }
  19.         else if(b>c&&b>d){
  20.             ans=d-c;
  21.         }
  22.     }
  23.     else{
  24.         if(d<=a){
  25.             ans=0;
  26.         }
  27.         else if(d>a&&d<=b){
  28.             ans=d-a;
  29.         }
  30.         else if(d>a&&d>b){
  31.             ans=b-a;
  32.         }
  33.     }
  34.  
  35.     printf("%d", ans);
  36.  
  37.  
  38.     return 0;
  39. }
  40.  
Success #stdin #stdout 0s 15624KB
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https://ideone.com/Ltm1o9
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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