比赛 |
2024暑期C班集训1 |
评测结果 |
AAAATTATTTTTTTTTTTTT |
题目名称 |
熙熙攘攘、我们的城市 |
最终得分 |
25 |
用户昵称 |
liuyiche |
运行时间 |
15.196 s |
代码语言 |
C++ |
内存使用 |
74.40 MiB |
提交时间 |
2024-07-01 11:07:20 |
显示代码纯文本
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int n, m, Min = 0;
ll Max = 0;
struct node
{
vector<int> nex;
vector<int> cost;
vector<int> id;
};
vector<node> v(1000005);
inline void dfs(int step, int cnt, ll q, int ltid, ll tmp)
{
if(cnt > Min)
return;
if(step == n)
{
q += tmp*tmp;
if(cnt < Min)
{
Min = cnt;
Max = q;
}
else if(cnt == Min && q > Max)
Max = q;
return;
}
for(int i = 0; i < v[step].nex.size(); ++i)
{
int x = v[step].nex[i], id = v[step].id[i], w = v[step].cost[i];
if(id == ltid)
dfs(x,cnt+w,q,id,tmp+w);
else
dfs(x,cnt+w,q+tmp*tmp,id,w);
}
}
int main()
{
freopen("Wrong_world.in", "r", stdin);
freopen("Wrong_world.out", "w", stdout);
ios::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
cin >> n >> m;
for(int i = 1; i <= m; ++i)
{
int l, las;
cin >> l >> las;
for(int j = 1; j <= l; ++j)
{
int u, x;
cin >> u >> x;
v[las].nex.push_back(x);
v[las].cost.push_back(u);
v[las].id.push_back(i);
las = x;
Min += u;
}
}
dfs(1,0,0,0,0);
cout << Min << " " << Max;
return 0;
}