Codeforces 435C Cardiogram

本文详细解析了如何解决Codeforces平台上的435C问题Cardiogram,涉及点坐标计算、线段方向判断等核心步骤。通过逐步分析和代码实现,读者可以深入了解解决此类问题的方法。

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题目链接:Codeforces 435C Cardiogram

这题做了好久才做出来,总是这里那里出现小问题,今天状态非常差。

读懂题就好了,只是很麻烦。先计算出来点的坐标,然后根据点的奇偶性确定线段是向上还是向下。

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cstring>

using namespace std;

const int MAX_N = 1000 + 10;

struct Corner
{
    int x, y;
};

bool cmp(Corner c1, Corner c2)
{
    return c1.y > c2.y;
}

Corner Corners[MAX_N];
int arr[MAX_N];
char ans[MAX_N][MAX_N << 1];

int main()
{
    memset(Corners, 0, sizeof(Corners));
    int n, max_y = 0, min_y = 0, sum = 0;
    scanf("%d", &n);
    scanf("%d", arr);
    sum += arr[0];
    Corners[0].x = arr[0];
    Corners[0].y = arr[0];
    max_y = max(max_y, Corners[0].y);
    min_y = min(min_y, Corners[0].y);
    for(int i = 1; i < n; i++)
    {
        scanf("%d", arr + i);
        sum += arr[i] ;
        Corners[i].x = Corners[i - 1].x;
        Corners[i].y = Corners[i - 1].y;
        Corners[i].x += arr[i];
        if(i % 2)
            Corners[i].y -= arr[i];
        else
            Corners[i].y += arr[i];
        max_y = max(max_y, Corners[i].y);
        min_y = min(min_y, Corners[i].y);
    }
    for(int i = 0; i < max_y - min_y; i++)
        for(int j = 0; j < sum; j++)
            ans[i][j] = ' ';
    int start_x = 0;
    int start_y = (min_y < 0) ? (max_y - min_y - 1) + min_y : (max_y - 1);
    for(int i = 0; i < n; i++)
    {
        if(i % 2)
        {
            for(int j = start_x; j < Corners[i].x; j++)
                ans[start_y++][j] = '\\';
            start_x = Corners[i].x;
            start_y--;
        }
        else
        {
            for(int j = start_x; j < Corners[i].x; j++)
                ans[start_y--][j] = '/';
            start_x = Corners[i].x;
            start_y++;
        }
    }
    for(int i = 0; i < max_y - min_y; i++)
        printf("%s\n", ans[i]);
    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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