Submission #2246722

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Source Code Expand

#include <iostream>
#include <string>
#include <vector>

#define INC(i, a, b) for(int i = a; i < b; ++i)
#define DEC(i, a, b) for(int i = a; i > b; --i)
#define REP(i, n) INC(i, 0, n)

typedef unsigned int uint;
typedef unsigned long ul;
typedef long long  ll;
typedef unsigned long long ull;

void TFprint(bool b, std::string T, std::string F){
    if(b){
        std::cout << T << std::endl;
    }else{
        std::cout << F << std::endl;
    }
}

int judge(ull left, ull right){
    if(left < right){
        return 1;
    }else if(left > right){
        return -1;
    }else{
        return 0;
    }
}
int main(){
    int n; std::cin >> n;
    std::vector<ull> a;
    ull temp;
    int ans = 1;
    int i = 0;
    REP(i, n){
        std::cin >> temp;
        a.push_back(temp);
    }

    while(i < n - 2){
        if(judge(a[i], a[i + 1]) * judge(a[i + 1], a[i + 2]) == -1){
            ans++;
            i++;
        }
        i++;
    }
    std::cout << ans << std::endl;
    return 0;
}

Submission Info

Judge Result