Submission #401757

#	Time	Username	Problem	Language	Result	Execution time	Memory
401757		lukameladze	Pinball (JOI14_pinball)	C++14	0 / 100	1 ms	332 KiB

pinball

# include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
using namespace std;
const int N=3e5+5;
long long dp[N],dp1[N],n,m,a[N],b[N],c[N],d[N],ans,tree[4*N];
void update(int node, int le, int ri ,int idx, int val) {
     if (le>idx || ri<idx) return; 
     if (le==ri) {
          tree[node]=val;
          return ;
     }
     int mid=(le+ri)/2;
     update(2*node, le ,mid, idx, val);
     update(2*node+1, mid+1, ri, idx, val);
     tree[node]=min(tree[2*node],tree[2*node+1]);
}
int getans(int node, int le, int ri ,int start, int end) {
     if (le>end || ri<start) return 1e9; 
     if (le>=start && ri<=end) {
          return tree[node];
     }
     int mid=(le+ri)/2;
     return min(getans(2*node, le ,mid, start, end),getans(2*node+1, mid+1, ri, start,end));
}
int main() {
     cin>>m>>n;
     for (int i=1; i<=m; i++) {
          cin>>a[i]>>b[i]>>c[i]>>d[i];
     }
     for (int i=1; i<=4*n; i++) {
          tree[i]=1e9;
     }
     for (int i=1; i<=m; i++) {
          if (a[i]==1) {
               dp[i]=d[i];
               update(1,1,n,c[i],dp[i]);
               continue;
          } 
          dp[i]=getans(1,1,n,a[i],b[i])+d[i];
          update(1,1,n,c[i],dp[i]);          //cout<<dp[5]<<endl;

     }
     for (int i=1; i<=4*n; i++) {
          tree[i]=1e9;
     }
     for (int i=1; i<=m; i++) {
          if (b[i]==n) {
               dp1[i]=d[i];
               update(1,1,n,c[i],dp1[i]);
               continue;
          }
          dp1[i]=getans(1,1,n,a[i],b[i])+d[i];
//                    cout<<dp1[5]<<endl;

          update(1,1,n,c[i],dp1[i]);
     }ans=1e9;
     for (int i=1; i<=m; i++) {
          ans=min(ans, dp[i]+dp1[i]-d[i]);
     }
     if (ans==1e9) cout<<-1<<endl;else
     cout<<ans<<endl;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 18
• Subtask 3: 0 / 22
• Subtask 4: 0 / 49