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AtCoder 生活107日目

Posted at

前回

#107日目
今日は、灰色を1問解いた後にABC191に参加しました。

|問題|難易度|自力で解けた|かかった時間|
|:-:|:-:|:-:|---|---|
|ABC065|A|◯|9分11秒|

Screen Shot 0003-02-06 at 23.33.42.png

##ABC191

###A


#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0;i < (n);i++)
using namespace std;
using ll = long long;
using pii = pair<int,int>;

const int INF = 2e9;

int main(){
    int v,t,s,d;
    cin >> v >> t >> s >> d;
    if(s*v >= d && t*v <= d)cout << "No" << endl;
    else cout << "Yes" << endl;
}

###B


#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0;i < (n);i++)
using namespace std;
using ll = long long;
using pii = pair<int,int>;

const int INF = 2e9;

int main(){
    int n,x;
    cin >> n >> x;
    rep(i,n){
        int a;
        cin >> a;
        if(a == x)continue;
        cout << a << " ";
    }
}

##ABC065_A


#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0;i < (n);i++)
using namespace std;
using ll = long long;
using pii = pair<int,int>;

const int INF = 2e9;

int main(){
    ll x,a,b;
    cin >> x >> a >> b;
    ll r = b - a;
    if(r <= 0){
        cout << "delicious" << endl;
        return 0;
    }
    if(r <= x) cout << "safe" << endl;
    else cout << "dangerous" << endl;
}

解くのにかかった時間:9分11秒

###最後に
今回のABCのC問題はかなり難しく感じた。またA問題も今までより少し難しくなってきている気がする。
ただ、今回はパフォーマンスを600まで戻せたのでこっからは伸びるだけだと思う。

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