Atcoder ABC 139B

Atcoder ABC 139B

题意：

解法：

CODE:

#include<iostream>

#include<cstdio>

#include<cstring>

#include<algorithm>

using namespace std;

#define LL long long

#define N 100010

LL a,b,ans;

int main() {

    scanf("%lld%lld",&a,&b);

    if(b == 1) {

        puts("0");

        return 0;

    }

    LL cnt = 1;

    while(true) {

        cnt = cnt + a - 1;

        ans++;

        if(cnt >= b) break;

    }

    printf("%lld",ans);

    //system("pause");

    return 0;

}