• Codeforces Round #633 (Div. 2) A. Filling Diamonds


    You have integer nn. Calculate how many ways are there to fully cover belt-like area of 4n24n−2 triangles with diamond shapes.

    Diamond shape consists of two triangles. You can move, rotate or flip the shape, but you cannot scale it.

    22 coverings are different if some 22 triangles are covered by the same diamond shape in one of them and by different diamond shapes in the other one.

    Please look at pictures below for better understanding.

    On the left you can see the diamond shape you will use, and on the right you can see the area you want to fill.

    These are the figures of the area you want to fill for n=1,2,3,4n=1,2,3,4.

    You have to answer tt independent test cases.

    Input

    The first line contains a single integer tt (1t1041≤t≤104) — the number of test cases.

    Each of the next tt lines contains a single integer nn (1n1091≤n≤109).

    Output

    For each test case, print the number of ways to fully cover belt-like area of 4n24n−2 triangles using diamond shape. It can be shown that under given constraints this number of ways doesn't exceed 10181018.

    Example
    Input
    Copy
    2
    2
    1
    
    Output
    Copy
    2
    1
    #include <bits/stdc++.h>
    using namespace std;
    int n;
    int main()
    {
        int t;
        cin>>t;
        while(t--)
        {
            scanf("%d",&n);
            cout<<n<<endl;
        }
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/lipoicyclic/p/12689851.html
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