Leetcode-5222 Split a String in Balanced Strings(分割平衡字符串)

 1 using namespace std;
 2 typedef pair<int,int> P;
 3 typedef long long ll;
 4 #define _for(i,a,b) for(register int i = (a);i < b;i ++)
 5 #define _rep(i,a,b) for(register int i = (a);i > b;i --)
 6 #define INF 0x3f3f3f3f
 7 #define MOD 100000000
 8 #define maxn 1003
 9 #define pb push_back
10 #define debug() printf("Miku Check OK!\n")
11 
12 
13 class Solution
14 {
15     public:
16         int balancedStringSplit(string s)
17         {
18             int rnt = 0;
19             int k1 = 0,k2 = 0;
20             _for(i,0,s.size())
21             {
22                 if(s[i]=='L')
23                     k1 ++;
24                 else
25                     k2 ++;
26                 if(k1==k2)
27                     rnt ++;
28             }
29             return rnt;
30         }
31 };