{
long long x=0,f=1;char ch=getchar();
while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
return x*f;
}
vuex中mutation和action的詳細區別 const store = new Vuex.Store({ state: { count: 0 }, mutations: { increm