Language:Default Parencodings
Description Let S = s1 s2...s2n be a well-formed string of parentheses. S can be encoded in two different ways: q By an integer sequence P = p1 p2...pn where pi is the number of left parentheses before the ith right parenthesis in S (P-sequence). q By an integer sequence W = w1 w2...wn where for each right parenthesis, say a in S, we associate an integer which is the number of right parentheses counting from the matched left parenthesis of a up to a. (W-sequence). Following is an example of the above encodings: S (((()()()))) P-sequence 4 5 6666 W-sequence 1 1 1456 Write a program to convert P-sequence of a well-formed string to the W-sequence of the same string. Input The first line of the input contains a single integer t (1 <= t <= 10), the number of test cases, followed by the input data for each test case. The first line of each test case is an integer n (1 <= n <= 20), and the second line is the P-sequence of a well-formed string. It contains n positive integers, separated with blanks, representing the P-sequence. Output The output file consists of exactly t lines corresponding to test cases. For each test case, the output line should contain n integers describing the W-sequence of the string corresponding to its given P-sequence. Sample Input 2 6 4 5 6 6 6 6 9 4 6 6 6 6 8 9 9 9 Sample Output 1 1 1 4 5 6 1 1 2 4 5 1 1 3 9 |
Language:Default Parencodings
Description Let S = s1 s2...s2n be a well-formed string of parentheses. S can be encoded in two different ways: q By an integer sequence P = p1 p2...pn where pi is the number of left parentheses before the ith right parenthesis in S (P-sequence). q By an integer sequence W = w1 w2...wn where for each right parenthesis, say a in S, we associate an integer which is the number of right parentheses counting from the matched left parenthesis of a up to a. (W-sequence). Following is an example of the above encodings: S (((()()()))) P-sequence 4 5 6666 W-sequence 1 1 1456 Write a program to convert P-sequence of a well-formed string to the W-sequence of the same string. Input The first line of the input contains a single integer t (1 <= t <= 10), the number of test cases, followed by the input data for each test case. The first line of each test case is an integer n (1 <= n <= 20), and the second line is the P-sequence of a well-formed string. It contains n positive integers, separated with blanks, representing the P-sequence. Output The output file consists of exactly t lines corresponding to test cases. For each test case, the output line should contain n integers describing the W-sequence of the string corresponding to its given P-sequence. Sample Input 2 6 4 5 6 6 6 6 9 4 6 6 6 6 8 9 9 9 Sample Output 1 1 1 4 5 6 1 1 2 4 5 1 1 3 9 |
代码:
#include <algorithm>
#include <iostream>
#include <stdio.h>
#include <string>
#include <vector>
#include <queue>
#include <map>
#include <set>
#include<cmath>
#include <stack>
#include<cstdlib>
#include<ctime>
using namespace std;
const int N =10005;
char d[N];
int a[N],b[N],n,cnt,j;
int count(){
int ans = 1;
while(1){
if(d[j] == '('){
j++;
ans+=count();
}
else{
b[cnt++] = ans;
j++;
return ans;
}
}
}
int main() {
int t,k;cin>>t;
while(t--){
cin>>n;
cnt = k =0;
for(int i =0;i<n;i++){
cin>>a[i];
for(j = 0;j<a[i] - k;j++){
d[cnt++] = '(';
}
d[cnt++] = ')';
k = a[i];
}
cnt = j =0;
count();
for(int i =0;i<n;i++) cout<<b[i]<<" ";
cout<<endl;
}
return 0;
}