Codeforces 1191B Tokitsukaze and Mahjong

题目链接：http://codeforces.com/problemset/problem/1191/B

 

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题意：类似于麻将，三个一样花色一样数字的，或者三个同花顺就赢了，新抽的能当任何类型，问至少几个。

思路：分类判断即可。

AC代码：

#include<bits/stdc++.h>
using namespace std;
bool check(int x,int y,int z)
{
    if(x == (y + z) / 2 && abs(y-z) == 2) return true;
    if(y == (x + z) / 2 && abs(x-z) == 2) return true;
    if(z == (y + x) / 2 && abs(y-x) == 2) return true;
    return false;
}
int main()
{
    string a,b,c;
    cin >> a >> b >> c;
    int x = a[0] - '0';
    int y = b[0] - '0';
    int z = c[0] - '0';
    if(a[1] == b[1] && b[1] == c[1])
    {
        if((x == y && y == z )|| check(x,y,z)) cout << 0 << endl;
        else if(abs(x-y) <= 2 || abs(z-y) <= 2 || abs(x-z) <= 2) cout << 1 << endl;
        else cout << 2 << endl;
    }
    else if(a[1] == b[1])
    {
        if(x == y || abs(x-y) <= 2) cout << 1 << endl;
        else cout << 2 << endl;
    }
    else if(b[1] == c[1])
    {
        if(z == y || abs(z-y) <= 2) cout << 1 << endl;
        else cout << 2 << endl;
    }
    else if(a[1] == c[1])
    {
         if(x == z || abs(x-z) <= 2) cout << 1 << endl;
        else cout << 2 << endl;
    }
    else cout << 2 << endl;
    return 0;
}