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0991 - Matrice 5
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= Restricții și precizări = * <code>1 ≤ n ≤ 100</code> * elementele matricei sunt numere naturale mai mici decât <code>1000</code> * liniile matricei sunt numerotate de la <code>1</code> la <code>n</code>. == Exemplul 1 == Input: 4 1 6 3 1 6 1 3 1 1 3 1 6 3 1 6 1 Output: 18 == Exemplul 2 == Input: 121 1 6 3 1 6 1 3 1 1 3 1 6 3 1 6 1 Output consola: n trebuie să fie între 1 și 100 inclusiv. == Rezolvare == <syntaxhighlight lang="python3" line="1"> def sub(n, x, k=0): if not check_constraints(n,matrix): return suma = 0 for i in range(0, n-1): for j in range(0, n-1-i): suma += x[i][j] return suma def check_constraints(n, matrix): if not(1 <= n <= 100): print("n trebuie să fie între 1 și 100 inclusiv.") for row in matrix: for elem in row: if elem >= 1000: print("Elementele matricei trebuie să fie mai mici decât 1000.") # Citirea datelor de intrare with open("matriceIN.txt", "r") as fin: n = int(fin.readline()) matrix = [list(map(int, fin.readline().split())) for _ in range(n)] # Calculul si afisarea sumei elementelor deasupra diagonalei secundare in fisierul de iesire with open("matriceOUT.txt", "w") as fout: fout.write(str(sub(n,matrix))) </syntaxhighlight>
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