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- #include <fstream>
- using namespace std;
- ifstream f("sumtri.in");
- ofstream g("sumtri.out");
- int a[101][101],n;
- int main()
- { f>>n;
- for(int i=1;i<=n;i++)
- for(int j=1;j<=i;j++) f>>a[i][j];
- for(int i=n-1;i>=1;i--)
- for(int j=1;j<=i;j++)
- a[i][j]=a[i][j]+max(a[i+1][j],a[i+1][j+1]);
- g<<a[1][1];
- f.close();
- g.close();
- return 0;
- }
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