题解 | 乒乓球

#include <iostream>
using namespace std;

int main() {
    string goal;
    cin>>goal;//读取比赛记录

    int n11=goal.length()/11;
    int n21=goal.length()/21;
    if(goal.length()%11>0)n11++;
    if(goal.length()%21>0)n21++;
    //判断输出次数
    int W=0;
    int L=0;//初始化积分
    int flag11=0;
    int flag21=0;//初始化flag
    //计算11分制
    for(flag11;flag11<goal.length();flag11++){
        if(goal[flag11]=='W')W++;
        else L++;

        if(W>=11 or L>=11){
            if(W-L>=2 or L-W>=2){//判定获胜并初始化积分
                cout<<W<<":"<<L<<endl;
                W=0;
                L=0;
            }
        }
        if(flag11==goal.length()-1){
            cout<<W<<":"<<L<<endl;
            W=L=0;//判定结束并初始化积分
        }
    }

    cout<<endl;
    //计算21分制
    for(flag21;flag21<goal.length();flag21++){
        if(goal[flag21]=='W')W++;
        else L++;

        if(W>=21 or L>=21){
            if(W-L>=2 or L-W>=2){
                cout<<W<<":"<<L<<endl;
                W=0;
                L=0;
            }
        }
        if(flag21==goal.length()-1){
            cout<<W<<":"<<L<<endl;
            W=L=0;
        }
    }
    
    
}