Submission #880754

#	Time	Username	Problem	Language	Result	Execution time	Memory
880754		User0069	Džumbus (COCI19_dzumbus)	C++17	110 / 110	157 ms	18976 KiB

dzumbus

#include<bits/stdc++.h>
#define taskname ""
#define el '\n'
#define fi first
#define sc second
#define pii pair<int, int>
#define all(v) v.begin(), v.end()
#define int ll
using namespace std;
using ll=long long;
using ull=unsigned long long;
using ld=long double;
#define Faster ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
const int maxn=1e3+2;
const int mod=1e9+7;
int n,m,dp[2][maxn][maxn],vis[maxn],sz[maxn],d[maxn],q;
vector<int> adj[maxn];
void trav(int x,int par)
{
    vis[x]=1;
    for(int y:adj[x])
    {
        if(y!=par) trav(y,x);
    }
}
void dfs(int x,int par)
{
    sz[x]=1;
    for(int y:adj[x])
    {
        if(y==par) continue;
        dfs(y,x);
        for(int i=sz[x];i>=0;i--)
        {
            for(int j=sz[y];j>=0;j--)
            {
                dp[0][x][i+j]=min({dp[0][x][i+j],dp[0][x][i]+dp[1][y][j],dp[0][x][i]+dp[0][y][j]});
                if(i>0) dp[1][x][i+j]=min(dp[1][x][i+j],dp[0][x][i-1]+dp[1][y][j]+d[x]);
                if(i>0&&j>0) dp[1][x][i+j]=min(dp[1][x][i+j],dp[0][x][i-1]+dp[0][y][j-1]+d[x]+d[y]);
                if(j>0) dp[1][x][i+j]=min(dp[1][x][i+j],dp[1][x][i]+dp[0][y][j-1]+d[y]);
                dp[1][x][i+j]=min({dp[1][x][i+j],dp[1][x][i]+dp[1][y][j],dp[1][x][i]+dp[0][y][j]});
            }
        }
        sz[x]+=sz[y];
    }
}
signed main()
{
    if (fopen(taskname".INP","r"))
    {
        freopen(taskname".INP","r",stdin);
        freopen(taskname".OUT","w",stdout);
    }
    Faster
    cin>>n>>m;
    for(int i=1;i<=n;i++) cin>>d[i];
    for(int i=1;i<=m;i++)
    {
        int a,b;
        cin>>a>>b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    for(int i=1;i<=n;i++)
    {
        if(!vis[i])
        {
            adj[0].push_back(i);
            trav(i,0);
        }
    }
    for(int i=0;i<=n;i++)
    {
        for(int j=1;j<=n;j++)
        {
            dp[0][i][j]=dp[1][i][j]=mod;
        }
        dp[1][i][0]=mod;
    }
    dfs(0,0);
    cin>>q;
    while(q--)
    {
        int D;
        cin>>D;
        int ans=0;
        for(int i=1;i<=n;i++)
        {
            if(dp[0][0][i]<=D) ans=i;
        }
        cout<<ans<<"\n";
    }
//    for(int i=1;i<=n;i++)
//    {
////        for(int j=1;j<=n;j++)
//        cout<<dp[0][0][i]<<" ";
//    }

}

Compilation message (stderr)

dzumbus.cpp: In function 'int main()':
dzumbus.cpp:52:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |         freopen(taskname".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
dzumbus.cpp:53:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         freopen(taskname".OUT","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 30 / 30
• Subtask 4: 30 / 30