ZOJ 1016 Parencodings

Parencodings

题目链接：http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=16

比较简单，直接在该位置往前找，找到能匹配的，越过的右括号+1即为所求答案。

 1 //Problem Name:Parencodings
 2 //Source: ZOJ
 3 //Author: jinjin18
 4 //Main idea:
 5 //Language: C++
 6 //======================================================================
 7 
 8 #include<stdio.h>
 9 #include<vector>
10 
11 using namespace std;
12 
13 vector<int> p;
14 vector<int> w;
15 int main(){
16     int n;
17     scanf("%d",&n);
18     while(n--){
19         p.clear();          //remember to initialize
20         w.clear();
21         int m;
22         scanf("%d",&m);
23         for(int i = 0; i < m ; i++){
24             int x;
25             scanf("%d",&x);
26             p.push_back(x);
27         }
28         w.push_back(1);
29         printf("%d",w[0]);
30         for(int i = 1; i < m ; i++){
31             int j = i - 1;
32             while(p[i]-p[j] - (i-j) < 0&&j >= 0){
33                 j--;
34             }
35             w.push_back(i-j);
36 
37             printf(" %d",w[i]);
38         }
39         printf("
");
40 
41     }
42     return 0;
43 }