提出 #18344256
ソースコード 拡げる
#include<bits/stdc++.h>
using namespace std;
long double dp[101][101][101];
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int a, b, c;
cin >> a >> b >> c;
for (int i = 0; i <= 100; i++)
for (int j = 0; j <= 100; j++)
for (int k = 0; k <= 100; k++)
dp[i][j][k] = -1.0;
function<long double(int, int, int)> solve = [&](int x, int y, int z) -> long double {
if (x == 100 || y == 100 || z == 100)
return (x - a) + (y - b) + (z - c);
if (dp[x][y][z] != -1.0) {
return dp[x][y][z];
}
long double res = ((long double) x / (long double) (x + y + z)) * solve(x + 1, y, z);
res += ((long double) y / (long double) (x + y + z)) * solve(x, y + 1, z);
res += ((long double) z / (long double) (x + y + z)) * solve(x, y, z + 1);
return dp[x][y][z] = res;
};
long double ans = solve(a, b, c);
cout << fixed << setprecision(12) << ans << '\n';
return 0;
}
提出情報
| 提出日時 | |
|---|---|
| 問題 | D - increment of coins |
| ユーザ | madlogic |
| 言語 | C++ (GCC 9.2.1) |
| 得点 | 400 |
| コード長 | 954 Byte |
| 結果 | AC |
| 実行時間 | 55 ms |
| メモリ | 19880 KiB |
ジャッジ結果
| セット名 | Sample | All | ||||
|---|---|---|---|---|---|---|
| 得点 / 配点 | 0 / 0 | 400 / 400 | ||||
| 結果 |
|
|
| セット名 | テストケース |
|---|---|
| Sample | sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt |
| All | hand_01.txt, hand_02.txt, hand_03.txt, hand_04.txt, hand_05.txt, random_01.txt, random_02.txt, random_03.txt, random_04.txt, random_05.txt, random_06.txt, random_07.txt, random_08.txt, random_09.txt, random_10.txt, random_11.txt, random_12.txt, random_13.txt, random_14.txt, random_15.txt, sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt |
| ケース名 | 結果 | 実行時間 | メモリ |
|---|---|---|---|
| hand_01.txt | AC | 53 ms | 19732 KiB |
| hand_02.txt | AC | 35 ms | 19792 KiB |
| hand_03.txt | AC | 55 ms | 19736 KiB |
| hand_04.txt | AC | 21 ms | 19748 KiB |
| hand_05.txt | AC | 17 ms | 19728 KiB |
| random_01.txt | AC | 28 ms | 19740 KiB |
| random_02.txt | AC | 21 ms | 19744 KiB |
| random_03.txt | AC | 19 ms | 19712 KiB |
| random_04.txt | AC | 24 ms | 19836 KiB |
| random_05.txt | AC | 21 ms | 19696 KiB |
| random_06.txt | AC | 26 ms | 19744 KiB |
| random_07.txt | AC | 25 ms | 19740 KiB |
| random_08.txt | AC | 39 ms | 19868 KiB |
| random_09.txt | AC | 22 ms | 19732 KiB |
| random_10.txt | AC | 19 ms | 19752 KiB |
| random_11.txt | AC | 19 ms | 19748 KiB |
| random_12.txt | AC | 19 ms | 19880 KiB |
| random_13.txt | AC | 21 ms | 19716 KiB |
| random_14.txt | AC | 22 ms | 19828 KiB |
| random_15.txt | AC | 23 ms | 19880 KiB |
| sample_01.txt | AC | 18 ms | 19812 KiB |
| sample_02.txt | AC | 19 ms | 19816 KiB |
| sample_03.txt | AC | 52 ms | 19716 KiB |
| sample_04.txt | AC | 31 ms | 19736 KiB |