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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#638504 | #8237. Sugar Sweet II | xueman | WA | 156ms | 20056kb | C++17 | 2.9kb | 2024-10-13 16:05:00 | 2024-10-13 16:05:02 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define ll long long
const int N = 5e5 + 10;
const int maxn = 1e6 + 10;
const int inf = 0x3f3f3f3f;
const int mod = 1e9 + 7;
ll qpow(ll a, ll n)
{
ll res = 1;
while (n)
{
if (n & 1)
res = res * a % mod;
a = a * a % mod;
n >>= 1;
}
return res;
}
struct egde
{
int to, ne;
} e[maxn];
int head[N], ecnt;
void add(int x, int y)
{
e[++ecnt].to = y;
e[ecnt].ne = head[x];
head[x] = ecnt;
}
ll a[N], b[N], w[N];
int fa[N];
bool vis[N];
ll P[N];
ll ans[N];
bool ok = 0;
int getfa(int x)
{
while (fa[x] != x && fa[x] != 0)
{
x = fa[x];
}
if (fa[x] == x)
{
ok = 1;
}
return x;
}
void dfs(int x, int f, int dep, bool op)
{
vis[x] = 1;
// cout << w[b[x] ] << ' ' << P[dep] << endl;
if (!op)
ans[x] = (P[dep] * w[x] % mod + a[x]) % mod;
else
ans[x] = a[x] % mod;
for (int i = head[x]; i; i = e[i].ne)
{
int y = e[i].to;
if (y == f)
continue;
dfs(y, x, dep + 1, op);
}
}
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
ll res = 1;
for (int i = 1; i < N; i++)
{
res = res * i % mod;
P[i] = qpow(res, mod - 2) % mod;
}
int T;
cin >> T;
while (T--)
{
int n;
cin >> n;
for (int i = 0; i <= n; i++)
{
head[i] = 0;
fa[i] = vis[i] = 0;
}
ecnt = 0;
for (int i = 1; i <= n; i++)
cin >> a[i];
for (int i = 1; i <= n; i++)
cin >> b[i];
for (int i = 1; i <= n; i++)
cin >> w[i];
for (int i = 1; i <= n; i++)
{
// if (i == b[i]) continue;
if (a[i] >= a[b[i]] && a[i] < a[b[i]] + w[b[i]])
{
add(b[i], i);
fa[i] = b[i];
// cout << b[i] << ' ' << i << endl;
}
}
for (int i = 1; i <= n; i++)
{
if (!vis[i])
{
// if (i == fa[i])
// {
// ans[i] = a[i] % mod;
// vis[i] = 1;
// continue;
// }
if (a[i] >= b[i] + w[b[i]])
{
ans[i] = a[i] % mod;
vis[i] = 1;
continue;
}
ok = 0;
int root = getfa(i);
// if (root = 1)
// cout << root << ' ';
dfs(root, 0, 1, ok);
}
}
for (int i = 1; i <= n; i++)
cout << ans[i] << ' ';
cout << endl;
}
}
詳細信息
Test #1:
score: 100
Accepted
time: 51ms
memory: 20056kb
input:
4 4 2 5 5 2 4 2 1 3 3 2 1 4 3 5 4 3 1 1 1 6 6 6 3 5 4 3 2 3 1 1 2 3 5 2 1 3 2 1 5 1 1 3 4 1 3 4 2 4
output:
500000007 5 5 6 5 10 9 166666673 5 6 500000006 4 3 4 5
result:
ok 15 numbers
Test #2:
score: -100
Wrong Answer
time: 156ms
memory: 20048kb
input:
50000 5 508432375 168140163 892620793 578579275 251380640 3 4 4 1 3 346232959 736203130 186940774 655629320 607743104 1 863886789 1 364158084 18 864679185 463975750 558804051 604216585 694033700 499417132 375390750 337590759 467353355 111206671 983760005 984444619 322277587 138763925 205122047 97736...
output:
508432375 904343293 892620793 578579275 251380640 863886789 864679185 463975750 558804051 604216585 694033700 499417132 196759729 901433117 519383814 907574792 983760005 984444619 489899014 435736558 113628626 977360756 482247153 665454200 665922935 577926775 132646723 421298438 601054667 9943882...
result:
wrong answer 1st numbers differ - expected: '854665334', found: '508432375'