CCF 2017 09-02 公共钥匙盒
CCF 2017 09-02 公共钥匙盒
1.用快速排序函数结合排序规则函数来给取放排序。
2.vector数组的强大功能。
1 #include<iostream> 2 #include<vector> 3 #include<algorithm> 4 using namespace std; 5 struct node{ 6 int num;//钥匙的编号 7 int start;//动作开始时间 8 int action;//动作的类型 0:放 1:取 9 node(){ 10 } 11 node(int num,int start,int action):num(num),start(start),action(action){ 12 } 13 }; 14 15 bool cmp(node a,node b) 16 { 17 if(a.start != b.start) return a.start<b.start;///1.按照动作开始时间升序排列 18 else{ 19 ///2.如果时间相同,则先放后取 20 if(a.action != b.action) return a.action < b.action; 21 else{ 22 ///3.如果时间相同且操作相同,则按照钥匙编号升序排队 23 return a.num<b.num; 24 } 25 } 26 } 27 28 int main() 29 { 30 int n,k; 31 while(cin>>n>>k) 32 { 33 vector<node> V; 34 vector<int> state(n+1); 35 for(int i=1;i<=n;i++) state[i] = i; 36 for(int i=0;i<k;i++) 37 { 38 int num,start,len; 39 cin>>num>>start>>len; 40 V.push_back(node(num,start,1));//取走钥匙 41 V.push_back(node(num,start+len,0)); 42 } 43 44 ///按照起始时间升序排列 45 sort(V.begin(),V.end(),cmp); 46 47 for(int i=0;i<V.size();i++) 48 { 49 node u = V[i]; 50 if(u.action == 1)//取走钥匙操作 51 { 52 for(int i=1;i<=n;i++) 53 if(state[i] == u.num) 54 { 55 state[i] = -1;break; 56 } 57 }else{ 58 for(int i=1;i<=n;i++) 59 if(state[i] == -1) 60 { 61 state[i] = u.num;break; 62 } 63 } 64 } 65 66 for(int i=1;i<=n;i++) 67 { 68 cout<<state[i]; 69 if(i==n) cout<<endl; 70 else cout<<" "; 71 } 72 } 73 return 0; 74 }
Python:
1 N, K = list(map(int, input().split())) 2 class node(object): 3 def __init__(self, num, time, action): 4 self.num, self.time, self.action = num, time, action 5 # action: 1代表取,0代表放 6 7 mlist = [] 8 for i in range(K): 9 n1, n2, n3 = list(map(int, input().split())) 10 mlist.append(node(n1, n2, 1)) # 取 11 mlist.append(node(n1, n2 + n3, 0)) # 放 12 13 keyarr = [(i+1) for i in range(N)] 14 15 # 将list进行排序,规则为 16 # 1. 按照时间升序 17 # 2. 时间相同,按照先放后取,即action升序 18 # 3. time和action相同,按照钥匙编号num升序 19 mlist.sort(key=lambda x:(x.time, x.action, x.num)) 20 21 # 按照排序后的list进行操作 22 for i in range(2*K): 23 # print(mlist[i].time, mlist[i].action, mlist[i].num,) 24 if mlist[i].action == 1: # 取 25 keyarr[keyarr.index(mlist[i].num)] = -1 26 else: 27 for j in range(N): 28 if keyarr[j] == -1: 29 keyarr[j] = mlist[i].num 30 break 31 32 for i in range(N): 33 print(keyarr[i], end="\t")