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  1. #include<iostream>
  2. #include<vector>
  3. #include<cmath>
  4. #include<algorithm>
  5. #include<set>
  6. #include<map>
  7.  
  8. #define ll long long int
  9. #define llu unsigned long long int
  10. #define N 100000
  11. using namespace std;
  12.  
  13.  
  14. int main(){
  15. int n;
  16.   cin>>n;
  17.   int a1[N+1],b1[N+1],c1[N+1],*a,*b,*c,*d;
  18.   int dp[N+1];
  19.   for(int i=1;i<=n;i++)
  20.     cin>>a1[i]>>b1[i]>>c1[i];
  21.   a=a1;b=b1;c=c1;
  22.   if(a[1]>b[1]&&a[1]>c[1]){
  23.     dp[1]=a[1];
  24.   	d=c;
  25.     c=a;
  26.     a=d;
  27.   }else if(b[1]>a[1]&&b[1]>c[1]){
  28.     dp[1]=b[1];
  29.     d=c;
  30.     c=b;
  31.     b=d;  
  32.   }else{
  33.     dp[1]=c[1];
  34.   }
  35.   for(int i=2;i<=n;i++){
  36.   	if(a[i]>b[i]){
  37.       d=c;
  38.     c=a;
  39.     a=d;
  40.       d[i]=a[i]+d[i-1];
  41.     }else{
  42.       d=c;
  43.     c=b;
  44.     b=d;
  45.       d[i]=b[i]+d[i-1];
  46.     }
  47.   }
  48.   cout<<d[n];
  49. return 0;
  50. }
Success #stdin #stdout 0s 4484KB
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https://ideone.com/9gc9ZX
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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