Submission #1012545

#	Time	Username	Problem	Language	Result	Execution time	Memory
1012545		amirhoseinfar1385	Wombats (IOI13_wombats)	C++17	55 / 100	20059 ms	35240 KiB

wombats

#include "wombats.h"
#include<bits/stdc++.h>
using namespace std;
const long long maxn=5000+10,maxm=200+10;
long long allr[maxn][maxm],allc[maxn][maxm],dp[maxn][maxm],n,m,ps[maxm],suf[maxm],inf=1e11+5,psmx[maxn],sufmx[maxn];

void calc(){
    for(long long k=1;k<=m;k++){
        for(long long j=1;j<=m;j++){
            ps[j]=ps[j-1]+allr[n][j-1];
        }
        for(long long j=m;j>=1;j--){
            suf[j]=suf[j+1]+allr[n][j];
        }
        for(int j=1;j<=m;j++){
            if(j<=k){
                dp[j][k]=ps[k]-ps[j];
            }else{
                dp[j][k]=suf[k]-suf[j];
            }
        }
    //    for(long long j=1;j<=m;j++){
      //      cout<<dp[j][k]<<" ";
     //   }
       // cout<<endl;
        psmx[0]=sufmx[m+1]=inf;
        for(long long i=n-1;i>=1;i--){
            for(long long j=1;j<=m;j++){
                ps[j]=ps[j-1]+allr[i][j-1];
            }
            for(long long j=m;j>=1;j--){
                suf[j]=suf[j+1]+allr[i][j];
            }
            for(long long j=1;j<=m;j++){
                psmx[j]=min(psmx[j-1],suf[j]+dp[j][k]+allc[i][j]);
            }
            for(long long j=m;j>=1;j--){
                sufmx[j]=min(sufmx[j+1],ps[j]+dp[j][k]+allc[i][j]);
            }
            for(long long j=1;j<=m;j++){
            //    cout<<psmx[j-1]<<" "<<suf[j]<<" "<<sufmx[j+1]<<" "<<ps[j]<<endl;
                dp[j][k]=min(dp[j][k]+allc[i][j],min(psmx[j-1]-suf[j],sufmx[j+1]-ps[j]));
            }
        //    cout<<"salam"<<endl;
          //  for(long long j=1;j<=m;j++){
            //    cout<<dp[j][k]<<" ";
        //    }
          //  cout<<endl;
        }
    }
}

void init(int R,int C,int H[5000][200],int V[5000][200]) {
    n=R;
    m=C;
    for(long long i=1;i<=n;i++){
        for(long long j=1;j<=m-1;j++){
            allr[i][j]=H[i-1][j-1];
        }
    }
    for(long long i=1;i<=n-1;i++){
        for(long long j=1;j<=m;j++){
            allc[i][j]=V[i-1][j-1];          
        }
    }
    calc();
}

void changeH(int P,int Q,int W) {
    P++;
    Q++;
    allr[P][Q]=W;
    calc();
}

void changeV(int P,int Q,int W) {
    P++;
    Q++;
    allc[P][Q]=W;
    calc();
}

int escape(int V1,int V2) {
    V1++;
    V2++;
    return dp[V1][V2];    
}

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   15 |  int res;
      |      ^~~

• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 18 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24