| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1193871 | vnedu | 도장 모으기 (JOI14_stamps) | C++17 | 0 ms | 0 KiB |
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
template<class T> bool maximize(T &a, const T &b){ return (a < b ? a = b, 1 : 0); }
template<class T> bool minimize(T &a, const T &b){ return (a > b ? a = b, 1 : 0); }
#define fi first
#define se second
#define pb push_back
#define ii pair<int, int>
#define all(x) x.begin(), x.end()
#define TASK "nonsense"
/// end of template ///
const int N = 3000 + 10;
int n,t;
struct Plat
{
int u,v,d,e;
Plat() {}
void input()
{
cin>>u>>v>>d>>e;
}
} plat[N];
namespace sub1
{
bool check()
{
return (n<=16);
}
const int N = 16;
const ll inf = 1e18;
vector<ii> adj[3*N+2];
ll dp[3*N+2][1<<N];
struct node
{
int u,mask;
ll dis;
node() {}
node(int u, int mask, ll dis) : u(u),mask(mask),dis(dis) {}
bool operator < (const node &S) const
{
return dis>S.dis;
}
};
priority_queue<node> pq;
void solve()
{
for(int i=0;i<n;++i) adj[i].pb({i+1,t});
adj[n].pb({3*n+1,t});
for(int i=3*n;i>2*n+1;--i) adj[i].pb({i-1,t});
for(int i=1;i<=n;++i)
{
adj[i].pb({i+n,plat[i].u});
adj[i+n].pb({i,plat[i].v});
adj[i+2*n].pb({i+n,plat[i].d});
adj[i+n].pb({i+2*n,plat[i].e});
}
for(int i=0;i<3*N+2;++i) for(int j=0;j<(1<<N);++j) dp[i][j]=inf;
dp[0][0]=0;
pq.push(node(0,0,0));
while(!pq.empty())
{
node cur=pq.top(); pq.pop();
if(cur.dis!=dp[cur.u][cur.mask]) continue;
// if(cur.u==3*n+1) cout<<cur.u<<' '<<cur.mask<<' '<<cur.dis<<'\n';
for(ii p : adj[cur.u])
{
int v=p.fi,w=p.se;
// cout<<v<<' '<<w<<'\n';
int nmask=cur.mask;
if(v>=n+1 && v<=n+n) nmask|=(1<<(v-(n+1)));
// cout<<dp[cur.u][cur.mask]<<'\n';
if(dp[cur.u][cur.mask]+w<dp[v][nmask])
{
// cout<<"DSA";
dp[v][nmask]=dp[cur.u][cur.mask]+w;
pq.push(node(v,nmask,dp[v][nmask]));
}
}
}
cout<<dp[3*n+1][(1<<n)-1];
}
}
namespace sub2
{
bool check()
{
return (n<=100);
}
const int N = 100 + 5;
const ll inf = 1e18;
ll dp[N][N];
void solve()
{
for(int i=0;i<N;++i) for(int j=0;j<N;++j) dp[i][j]=inf;
dp[0][0]=0;
for(int i=0;i<n;++i) for(int k=0;k<n;++k) if(dp[i][k]!=inf)
{
// cout<<i<<' '<<k<<'\n';
for(int close=0;close<=k;++close) for(int open=0;open<n;++open) if(k-close+open<n)
{
ll sum=dp[i][k]+(plat[i+1].u+plat[i+1].e)*1LL*close+(plat[i+1].d+plat[i+1].v)*1LL*open+2LL*(i+1)*t*(clost-open);
if(max(open,close)==0)
{
if(k==0) sum+=plat[i+1].u+plat[i+1].v;
else sum+=min(plat[i+1].u+plat[i+1].v,plat[i+1].d+plat[i+1].e);
}
minimize(dp[i+1][k-close+open],sum);
}
}
cout<<dp[n][0]+(n+1)*1LL*t;
}
}
void solve()
{
cin>>n>>t;
for(int i=1;i<=n;++i) plat[i].input();
if(sub1::check()) return void(sub1::solve());
if(sub2::check()) return void(sub2::solve());
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
// freopen(TASK".inp","r",stdin);
// freopen(TASK".out","w",stdout);
int testcase=1;
// cin>>testcase;
while (testcase--)
solve();
return 0;
}