AT2141 AtCoDeer kun and strange rock-paper-scissors / AtCoDeer and Rock-Paper 题解

Luo Gu translate the page

I venture to ask this question is malicious scores do?

Obviously you can choose the veil on the election veil.

Assuming that the first individual all-out rock.

Consider some of the stones revise veil.

Such contributions only to rise, add up is the answer.

#include<cstdio>
#include<cstring>
#define re register
using namespace std;
template<typename T>
inline void read(T&x)
{
    x=0;
    char s=getchar();
    bool f=false;
    while(!(s>='0'&&s<='9'))
    {
        if(s=='-')
            f=true;
        s=getchar();
    }
    while(s>='0'&&s<='9')
    {
        x=(x<<1)+(x<<3)+s-'0';
        s=getchar();
    }
    if(f)
        x=(~x)+1;
}
char s[1000010],len;
long long ans,sum_1,sum_2;
bool col[1000010];
int main()
{
    scanf("%s",s+1);
    len=strlen(s+1);
    for(int i=1; i<=len; ++i)
    {
        if(s[i]=='p')
        {
            if(sum_1<sum_2)
                sum_1++;
            else
            {
                sum_2++;
                ans--;
            }
        }
        else
        {
            if(sum_1<sum_2)
            {
                sum_1++;
                ans++;
            }
            else
                sum_2++;
        }
    }
    printf("%lld\n",ans);
}