def buildEdges(self):
for node2 in self.nodes.values():
for node1 in self.nodes.values():
s = getSymbol(node2.value - node1.value)
if s:
GraphEdge(node1, node2, s)
if node2 in self.roots: self.roots.remove(node2)
from python.util import getSymbol
__author__ = "ekarpov"
specter = []
while True:
s = input()
if not s:
break
specter.append(float(s))
specter = specter[::-1]
protein = ""
prev_w = specter[0]
for w in specter[1:]:
weight = prev_w - w
prev_w = w
protein = getSymbol(weight) + protein
print(protein)
L.append(float(s))
P = L[0]
L = L[1:]
n = (len(L) >> 1) - 1
graph = {key(x): GraphNode(x) for x in L}
starts = set(graph.keys())
ends = set(graph.keys())
for i in range(0, len(L)):
w1 = L[i]
for j in range(0, len(L)):
w2 = L[j]
if w2 > w1:
s = util.getSymbol(w2 - w1)
if not s is None:
key1 = key(w1)
key2 = key(w2)
GraphEdge(graph[key1], graph[key2], s)
if key2 in starts: starts.remove(key2)
if key1 in ends: ends.remove(key1)
prefixes = set()
suffixes = set()
for node in starts:
traverseForward(graph[node], '')
for node in ends:
traverseBackward(graph[node], '')