답안 #379414

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
379414	2021-03-18T07:39:52 Z	benedict0724	제비 (kriii4_W)	C++17	100 / 100	3 ms	492 KB

W

#include <iostream>

using namespace std;
typedef long long ll;
const ll mod = 1000000007;

ll pow(ll x, ll y){
    int k = 0; ll temp = x, ans = 1;
    while((1LL << k) <= y)
    {
        if((1LL << k) & y){
            ans *= temp;
            ans %= mod;
        }
        temp *= temp;
        temp %= mod;
        k++;
    }

    return ans;
}

ll inv(ll x) { return pow(x, mod - 2); }

void solve()
{
    ll R, G, B, K; cin >> R >> G >> B >> K;
    ll ans = (B+G)*K; ans %= mod;
    ans *= inv(B); ans %= mod;
    ll ans2 = R * inv(pow(1+B, K)); ans2 %= mod;
    ll ans3 = pow(1+B, K) - pow(B, K); ans3 %= mod;

    ans2 *= ans3; ans2 %= mod;
    ans += ans2; ans %= mod;
    if(ans < 0) ans += mod;

    cout << ans << "\n";
}

int main()
{
    ios::sync_with_stdio(false); cin.tie(NULL);
    int t; cin >> t;
    while(t--) solve();
}

Subtask #1

6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	364 KB	Output is correct
2	Correct	2 ms	364 KB	Output is correct
3	Correct	2 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	2 ms	364 KB	Output is correct
8	Correct	3 ms	364 KB	Output is correct
9	Correct	2 ms	364 KB	Output is correct
10	Correct	2 ms	364 KB	Output is correct

Subtask #2

94.0 / 94.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	364 KB	Output is correct
2	Correct	2 ms	492 KB	Output is correct
3	Correct	2 ms	364 KB	Output is correct
4	Correct	2 ms	364 KB	Output is correct
5	Correct	2 ms	364 KB	Output is correct
6	Correct	2 ms	364 KB	Output is correct
7	Correct	2 ms	492 KB	Output is correct
8	Correct	2 ms	364 KB	Output is correct
9	Correct	2 ms	364 KB	Output is correct
10	Correct	2 ms	364 KB	Output is correct
11	Correct	2 ms	364 KB	Output is correct
12	Correct	2 ms	364 KB	Output is correct
13	Correct	2 ms	492 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	364 KB	Output is correct
16	Correct	2 ms	364 KB	Output is correct
17	Correct	2 ms	364 KB	Output is correct
18	Correct	2 ms	364 KB	Output is correct
19	Correct	2 ms	364 KB	Output is correct
20	Correct	2 ms	364 KB	Output is correct