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ABC127

atcorder

Last updated at 2019-09-06Posted at 2019-09-06

A - Ferris Wheel

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

int main(){
    int A,B; cin >> A >> B;
    if (A>=13) cout << B;
    else if (6<=A && A<=12) cout << B/2;
    else cout << 0;
}

改善点(&&)

else if (6<=A && A<=12)の黒字の部分を6<=A<=12としないように気を付ける！

B - Algae

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

int main(){
    int r,D,X; cin >> r >> D >> X;
    for (int i=0; i<10; i++){
        X=r*X-D;
        cout << X << endl;
    }
}

改善点

X=r*X-D;の計算は右辺から始まり、最後に左辺に代入するという順番であることを忘れるな！

C - Prison

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