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  • 1219. 移动距离(水题,向上取整公式)

    题目链接:

    https://www.acwing.com/problem/content/1221/

    题解:

    对于分子分母都是整数的除法,例如a/b,除了可以用ceil()函数向上取整外,还可以直接用公式(a+b-1)/b;

    代码:

    #include <algorithm>
    #include <iostream>
    
    using namespace std;
    
    int w,m,n;
    
    int main(){
        cin >> w >> m >> n;
        int row1,cow1;
        row1 = (m + w -1) / w;
        if(row1 % 2 == 1){
            if(m % w == 0) cow1 = w;
            else cow1 = m % w;
        }else{
            if(m % w == 0) cow1 = 1;
            else cow1 = w - (m % w) + 1;
        }
        
        int row2 = (n+w-1) / w,cow2;
        
        if(row2 % 2 == 1){
            if(n % w == 0) cow2 = w;
            else cow2 = n % w;
        }else{
            if(n % w == 0) cow2 = 1;
            else cow2 = w - (n % w) + 1;
        }
        
        int res = max(row1,row2) - min(row1,row2) + (max(cow1,cow2)-min(cow1,cow2));
        cout << res << endl;
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/doubest/p/12298994.html
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