codeforces 358C

本文介绍了一个算法问题,涉及栈、队列和双端队列的数据结构操作。目标是在遇到0时,从这些数据结构中取出数值使总和最大,并详细展示了实现这一目标的C++代码。

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题意:有三种数据结构,栈 队列  双端队列, 每次遇到一个非0的数就可以把这个数放到 栈顶or队列尾or 双端队列的前面或者尾部,   当遇到0的时候最多可以提取三种数据结构中的一个数字, 栈顶的数 + 队列的头部 + 双端的头或尾,  使得每次提取的结果最大,且提取完后三种数据结构全部清空。请模拟整个操作过程。

思路:因为每次遇到0之后数据会全部清空,那也就是说我们只要找到0之前的最大的三个数,分别放进栈,队列,双端的头,  其余的数全部放进双端的尾部即可、

#include<cmath>
#include<cstring>
#include<cstdio>
#include<algorithm>
#include<queue>
#include<vector>
#include<string>
#include<iostream>
using namespace std;
const int qq =  1e5+10;
int command[qq];
string pop[4];
string push[4];
int main(){
	pop[0]="popStack",pop[1]="popQueue",pop[2]="popFront",pop[3]="popBack";
	push[0]="pushStack",push[1]="pushQueue",push[2]="pushFront",push[3]="pushBack";
	int n;scanf("%d",&n);
	for(int i=0; i<n; ++i)	scanf("%d",command+i);
	int a, b, c;
	for(int i=0; i<n; ++i){
		a = b = c = 0;
		int j = i;
		while(command[j]!=0&&j<n){
			if(command[j]>a){
				c = b;
				b = a;
				a = command[j];
			}else if(command[j]>b){
				c = b;
				b = command[j];
			}else if(command[j]>c)
				c = command[j];
			j++;
		}
		if(a==0&&b==0&&c==0)	cout << 0 << endl;
		else{
			int count=3;
			if(b==0)	count--;
			if(c==0)	count--;
			for(int k=i; k<j; ++k)
				if(command[k]==a){
					cout << push[0] << endl;
					a = 0;
				}else if(command[k]==b){
					cout << push[1] << endl;
					b = 0;
				}else if(command[k]==c){
					cout << push[2] << endl;
					c = 0;
				}else	cout << push[3] << endl;
			if(j>=n)	break;
			cout << count;
			for(int k=0; k<count; ++k)
				cout << " " << pop[k];
			cout << endl;
			i = j; 
		}
	}
	return 0;
}


### Codeforces Problem 1332C Explanation The provided references pertain specifically to problem 742B on Codeforces rather than problem 1332C. For an accurate understanding and solution approach for problem 1332C, it's essential to refer directly to its description and constraints. However, based on general knowledge regarding competitive programming problems found on platforms like Codeforces: Problem 1332C typically involves algorithmic challenges that require efficient data structures or algorithms such as dynamic programming, graph theory, greedy algorithms, etc., depending upon the specific nature of the task described within this particular question[^6]. To provide a detailed explanation or demonstration concerning **Codeforces problem 1332C**, one would need direct access to the exact statement associated with this challenge since different tasks demand tailored strategies addressing their unique requirements. For obtaining precise details about problem 1332C including any sample inputs/outputs along with explanations or solutions, visiting the official Codeforces website and navigating to contest number 1332 followed by examining section C is recommended. ```python # Example pseudo-code structure often seen in solving competitive coding questions. def solve_problem_1332C(input_data): # Placeholder function body; actual logic depends heavily on the specifics of problem 1332C. processed_result = process_input(input_data) final_answer = compute_solution(processed_result) return final_answer input_example = "Example Input" print(solve_problem_1332C(input_example)) ```
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