Submission #211448

#TimeUsernameProblemLanguageResultExecution timeMemory
211448mayhoubsalehVisiting Singapore (NOI20_visitingsingapore)C++14
23 / 100
139 ms262148 KiB
/*#include <bits/stdc++.h> #define ll long long #define pb push_back #define IOS ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0); using namespace std; const int inf=1e9+10; const int maxn=1e6+100; int n,s,k; int nxt[maxn][20],pos[maxn],pre[maxn]; int sh[maxn]; int main() { IOS cin>>n>>s>>k; pos[1]=0; for(int i=2;i<=n;i++){ cin>>pos[i]; pos[i]+=pos[i-1]; } for(int i=1;i<=n;i++){ cin>>pre[i]; pre[i]+=pre[i-1]; //cout<<pre[i]<<' '; } pre[n+1]=pre[n]; for(int i=1;i<=n;i++){ int id=upper_bound(pos+i,pos+n+1,pos[i]+k)-pos; id--; sh[i]=id; nxt[i][0]=upper_bound(pos+id,pos+n+1,pos[id]+k)-pos; //cout<<nxt[i][0]<<' '; } for(int i=1;i<20;i++){ for(int id=1;id<=n;id++){ nxt[id][i]=nxt[nxt[id][i-1]][i-1]; if(!nxt[id][i])nxt[id][i]=n+1; } } pair<int,int>mx={-1,-1}; for(int l=1;l<=n;l++){ int r=l; for(int i=0;i<20;i++){ if(((1<<i)&s))r=nxt[r][i]; } //cout<<l<<' '<<r<<endl; mx=max(mx,{pre[r-1]-pre[l-1],l}); } vector<int>ans; int l=mx.second; while(l<=n&&s){ ans.pb(sh[l]); l=nxt[l][0]; s--; } cout<<ans.size()<<endl; for(auto x:ans)cout<<x<<' ';cout<<endl; return 0; } */ #include <bits/stdc++.h> #define ll long long #define pb push_back #define IOS ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0); using namespace std; const ll inf=1e9+10; const ll maxn=6050; ll n,m,k,a,b; ll s[maxn],val[maxn],t[maxn]; ll dp[maxn][maxn][2][2]; bool vis[maxn][maxn][2][2]; ll solve(ll day,ll sc,ll f1,ll f2){ if(vis[day][sc][f1][f2])return dp[day][sc][f1][f2]; vis[day][sc][f1][f2]=1; ll &ans=dp[day][sc][f1][f2]; ans=-1e9; if(sc==m)return ans=0; if(day==n)return ans=solve(day,sc+1,f1,0)-b-a*f2; ans=max(ans,solve(day,sc+1,f1,0)-b-a*f2); ans=max(ans,solve(day+1,sc,0,f2)-b-a*f1); if(s[day]==t[sc])ans=max(ans,val[s[day]]+solve(day+1,sc+1,1,1)); return ans; } int main() { IOS cin>>k>>n>>m>>a>>b; for(ll i=1;i<=k;i++)cin>>val[i]; for(ll i=0;i<n;i++)cin>>s[i]; for(ll i=0;i<m;i++)cin>>t[i]; a=-a; b=-b; for(ll i=0;i<n+10;i++){ for(ll j=0;j<m+10;j++){ for(ll k=0;k<2;k++){ for(ll l=0;l<2;l++){ dp[i][j][k][l]=-1e9; } } } } for(ll day=0;day<n+10;day++){ for(ll f1=0;f1<2;f1++){ for(ll f2=0;f2<2;f2++){ dp[day][m][f1][f2]=0; } } } for(ll sc=m-1;sc>=0;sc--){ for(ll day=n;day>=0;day--){ for(ll f1=0;f1<2;f1++){ for(ll f2=0;f2<2;f2++){ ll &ans=dp[day][sc][f1][f2]; if(day==n){ans=dp[day][sc+1][f1][0]-b-a*f2;continue;} ans=max(ans,dp[day][sc+1][f1][0]-b-a*f2); ans=max(ans,dp[day+1][sc][0][f2]-b-a*f1); if(s[day]==t[sc])ans=max(ans,dp[day+1][sc+1][1][1]+val[s[day]]); } } } } ll ans=-a-b*m; for(ll i=0;i<=n;i++){ ans=max(ans,dp[i][0][1][1]); } cout<<ans<<endl; return 0; }
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