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3692 - maxime
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= Exemplul 1: = <code>maximeIN.txt</code> 6 3 1 3 8 1 8 3 2 5 6 <code>maximeOUT.txt</code> 2 2 1 === Explicație === Aplicând prima operație de eliminare, șirul devine: <code>N = 5</code> și <code>V = 3 3 8 1 8</code>, valoarea <code>rep</code> devine <code>2</code>. Aplicând a doua operație de eliminare, șirul devine: <code>N = 5</code> și <code>V = 3 1 3 8 8</code>, valoarea <code>rep</code> devine <code>2</code>. Aplicând a treia operație de eliminare, șirul devine: <code>N = 5</code> și <code>V = 3 1 3 8 1</code>, valoarea <code>rep</code> devine <code>1</code>. == Exemplul 2: == <code>maximeIN.txt</code> 100001 3 1 3 8 1 8 3 2 5 6 <code>maximeOUT.txt</code> Datele nu corespund restrictiilor impuse == Rezolvare == <syntaxhighlight lang="python3" line="1" def="" calculeaza_rep(v):="" maxim="0" rep="0" for="" val="" in="" v:="" if=""> NMAX = 100005 def verifica_restricții(n, a, m, queries): """Verifică dacă datele de intrare respectă restricțiile impuse.""" if not (2 <= n <= 100000): return False if any(v < 1 or v > 100000 for v in a): return False if not (1 <= m <= 100000): return False if any(p < 1 or p > n for p in queries): return False return True def main(): with open("maximeIN.txt", "r") as fin, open("maximeOUT.txt", "w") as fout: n = int(fin.readline().strip()) a = list(map(int, fin.readline().strip().split())) m = int(fin.readline().strip()) queries = list(map(int, fin.readline().strip().split())) if not verifica_restricții(n, a, m, queries): fout.write("Datele nu corespund restrictiilor impuse") return premaxim = maxim = -1 pozpremaxim = pozmaxim = -1 rep = varf = 0 CNT = [0] * (NMAX + 2) PZ = [0] * (NMAX + 2) st = [0] * (NMAX + 2) DR = [0] * (NMAX + 2) OK = [0] * (NMAX + 2) for i in range(1, n + 1): if a[i-1] > maxim: premaxim, pozpremaxim = maxim, pozmaxim maxim, pozmaxim = a[i-1], i if pozpremaxim >= 1: PZ[pozpremaxim] = i PZ[pozmaxim] = -1 CNT[i] = 1 else: while varf > 0 and a[i-1] > a[st[varf]-1]: varf -= 1 if pozmaxim >= 1 and PZ[pozmaxim] == 0 and a[i-1] >= premaxim: PZ[pozmaxim] = i if a[i-1] == premaxim: OK[pozmaxim] = 1 if a[i-1] == maxim: CNT[i] = 2 rep += 1 st[varf + 1] = i varf += 1 for i in range(n, 0, -1): while varf > 0 and a[i-1] > a[st[varf]-1]: varf -= 1 DR[i] = 1 + DR[st[varf]] if a[i-1] == a[st[varf]-1] else DR[st[varf]] st[varf + 1] = i varf += 1 for p in queries: if CNT[p] == 0: fout.write(f"{rep} ") elif CNT[p] == 2: fout.write(f"{rep - 1} ") elif CNT[p] == 1: if OK[p]: fout.write(f"{1 + rep - DR[p] + DR[PZ[p]]} ") else: fout.write(f"{rep - DR[p] + DR[PZ[p]]} ") fout.write("\n") # Scriem un newline la sfârșit pentru a încheia output-ul if __name__ == "__main__": main() </syntaxhighlight>
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