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tsp.py
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tsp.py
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# import functools
n, m = [int(x) for x in input().split()]
c=[[0]*21 for i in range(21)]
sum=0
mark=[0]*21
# g=[['null']]*21 sai do 1 đống đc khởi tạo
g=[['null'] for i in range(21)]
best=1e9
#c2 tạo arr add arr rồi add vào g[]
for i in range (m) :
u, v, w = [int(x) for x in input().split()]
# g[u].remove('null')#lần chạy thứ 2 k đc
if(g[u][0]=='null'): g[u].remove('null')
# g[u].clear() k dc
g[u].append((v,w))
c[u][v] = w
# print(u)
# print(m)
# print(g)
mark[1]=1
# def comp ( x,y):
# return x[0] < y[0]
for i in range(1, n+1):
# sort(g[i].begin(),g[i].end(),cmp)
# g[i].sort(key=cmop)
# sorted(g[i], cmp=comp) python 2
# sorted(g[i], key=cmp_to_key(comp))# cần import
g[i].sort(key=lambda x: x[1])
# print (g[1].remove('null'))
# print (g)
# x=(1,2)
# y=(0,3)
# print(cmp(x,y))
def Duyet(x, u):
global sum
global best
if (sum >= best): return
if(x == n) :
if(c[u][1] != 0 & sum+c[u][1] < best):
best = sum +c[u][1]
return
for i in range( len(g[u])):
v = g[u][i][0]
w = g[u][i][1]
if(mark[v]==0):
mark[v] = 1
sum += w
Duyet(x+1,v)
mark[v] = 0
sum -= w
Duyet(1,1)
print(best)
'''# import functools
n, m = [int(x) for x in input().split()]
c=[[0]*21 for i in range(21)]
sum=0
mark=[0]*21
# g=[['null']]*21 sai do 1 đống đc khởi tạo
# g=[['null'] for i in range(21)]
best=1e9
#c2 tạo arr add arr rồi add vào g[]
for i in range (m) :
u, v, w = [int(x) for x in input().split()]
# g[u].remove('null')#lần chạy thứ 2 k đc
# if(g[u][0]=='null'): g[u].remove('null')
# g[u].clear() k dc
# g[u].append((v,w))
c[u][v] = w
# print(u)
# print(m)
# print(g)
mark[1]=1
# def comp ( x,y):
# return x[0] < y[0]
# for i in range(1, n+1):
# sort(g[i].begin(),g[i].end(),cmp)
# g[i].sort(key=cmop)
# sorted(g[i], cmp=comp) python 2
# sorted(g[i], key=cmp_to_key(comp))# cần import
# g[i].sort(key=lambda x: x[1])
# print (g[1].remove('null'))
# print (g)
# x=(1,2)
# y=(0,3)
# print(cmp(x,y))
def Duyet(x, u):
global sum
global best
if (sum >= best): return
if(x == n) :
if(c[u][1] != 0 & sum+c[u][1] < best):
best = sum +c[u][1]
return
for i in range( 2,n+1):
# v = g[u][i][0]
# w = g[u][i][1]
w=c[u][i]
if(mark[i]==0):
mark[i] = 1
sum += w
Duyet(x+1,i)
mark[i] = 0
sum -= w
Duyet(1,1)
print(best)
'''
'''
# import functools
n, m = [int(x) for x in input().split()]
# c=[[0]*21 for i in range(21)]
sum=0
mark=[0]*21
# g=[['null']]*21 sai do 1 đống đc khởi tạo
g=[['null'] for i in range(21)]
best=1e9
#c2 tạo arr add arr rồi add vào g[]
for i in range (m) :
u, v, w = [int(x) for x in input().split()]
# g[u].remove('null')#lần chạy thứ 2 k đc
if(g[u][0]=='null'): g[u].remove('null')
# g[u].clear() k dc
g[u].append((v,w))
# c[u][v] = w
# print(u)
# print(m)
# print(g)
mark[1]=1
# def comp ( x,y):
# return x[0] < y[0]
for i in range(1, n+1):
# sort(g[i].begin(),g[i].end(),cmp)
# g[i].sort(key=cmop)
# sorted(g[i], cmp=comp) python 2
# sorted(g[i], key=cmp_to_key(comp))# cần import
g[i].sort(key=lambda x: x[1])
# print (g[1].remove('null'))
# print (g)
# x=(1,2)
# y=(0,3)
# print(cmp(x,y))
def Duyet(x, u):
global sum
global best
if (sum >= best): return
if(x == n ) :
# if(c[u][1] != 0 & sum+c[u][1] < best):
for i in range(len(g[u])):
if (g[u][i][0]==1):
a =g[u][i][1]
# if(g[u][1][1] != 0 & sum+g[u][1][1] < best):
# # best = sum +c[u][1]
# best = sum +g[u][1][1]
if(a != 0 & sum+ a < best):
best = sum +a
# print(a)
return
for i in range( len(g[u])):
v = g[u][i][0]
w = g[u][i][1]
if(mark[v]==0):
mark[v] = 1
sum += w
Duyet(x+1,v)
mark[v] = 0
sum -= w
Duyet(1,1)
print(best)
'''
'''
# import functools
n, m = [int(x) for x in input().split()]
# c=[[0]*21 for i in range(21)]
sum=0
mark=[0]*21
g=[['null']]*21
best=1e9
#c2 tạo arr add arr rồi add vào g[]
for i in range (m) :
u, v, w = [int(x) for x in input().split()]
# g[u].remove('null')#lần chạy thứ 2 k đc
if(g[u][0]=='null'): g[u].remove('null')
# g[u].clear() k dc
g[u].append((v,w))
# c[u][v] = w
mark[1]=1
# def comp ( x,y):
# return x[0] < y[0]
for i in range(1, n+1):
# sort(g[i].begin(),g[i].end(),cmp)
# g[i].sort(key=cmop)
# sorted(g[i], cmp=comp) python 2
# sorted(g[i], key=cmp_to_key(comp))# cần import
g[i].sort(key=lambda x: x[1])
# print (g[1].remove('null'))
# x=(1,2)
# y=(0,3)
# print(cmp(x,y))
def Duyet(x, u):
global sum
global best
if (sum >= best): return
if(x == n) :
if(g[u][1][1] != 0 & sum+g[u][1][1] < best):
best = sum +g[u][1][1]
return
for i in range( len(g[u])):
v = g[u][i][0]
w = g[u][i][1]
if(mark[v]==0):
mark[v] = 1
sum += w
Duyet(x+1,v)
mark[v] = 0
sum -= w
Duyet(1,1)
print(best)
'''