CCP-CSP认证考试 201803-1 跳一跳 c/c++题解

CCF-CSP认证考试题解目录By东瓜lqd

题目描述:

代码:

#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
const int inf = 0x3f3f3f3f;
const ll  INF = 0x3f3f3f3f3f3f3f3f;
const int PI = acos(-1);
const int E = exp(1);
const int MOD = 1e9+7;
const int MAX = 1e5+5;
int jmp;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int sum = 0;
    int preGrade = 1;
    while(cin >> jmp && jmp != 0)
    {
        if(jmp == 1)
        {
            sum += 1;
            preGrade = 1;
        }
        else if(jmp == 2)
        {
            if(preGrade == 1) preGrade = 2;
            else preGrade += 2;
            sum += preGrade;
        }
    }
    cout << sum << endl;
    return 0;
}