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 |
---|---|---|---|---|---|---|---|---|---|
#213575 | #2715. 8.4t4 | stawalr | Compile Error | / | / | C++ | 983b | 2024-11-12 21:08:18 | 2024-11-12 23:45:19 |
answer
#include<bits/stdc++.h>
using namespace std;
const int mod=1e9+7;
const int maxn=5005;
bool vis[maxn];
vector<int> e[maxn];
int n;
inline void view_all(vector<int> &cur,int x,int fa)
{
cur.push_back(x);
for(int p: e[x])
{
if (vis[p]) continue;
if (p == fa) continue;
view_all(cur, p, x);
}
}
inline int calc(int x)
{
vector<int> cur;
int ans = 0;
view_all(cur, x, -1);
for(auto w : cur)
{
int res = 1;
vis[w] = 1;
for(auto p: e[w])
{
if (vis[p]) continue;
res = 1ll * res * calc(p) % mod;
}
vis[w] = 0;
ans = (ans + res) % mod;
}
return ans;
}
inline int get_ans()
{
return calc(1);
}
int main()
{
int x,y;
scanf("%d",&n);
for(int i=1;i<n;i++)
{
scanf("%d%d",&x,&y);
e[x].push_back(y);
e[y].push_back(x);
}
printf("%d",get_ans());
}
详细
answer.code: In function 'void view_all(std::vector<int>&, int, int)': answer.code:11:16: error: range-based 'for' loops are not allowed in C++98 mode for(int p: e[x])\x0d ^ answer.code: In function 'int calc(int)': answer.code:23:14: error: 'w' does not name a type for(auto w : cur)\x0d ^ answer.code:35:5: error: expected ';' before 'return' return ans;\x0d ^ answer.code:35:5: error: expected primary-expression before 'return' answer.code:35:5: error: ex...