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Submission #1101162

# Submission time Handle Problem Language Result Execution time Memory
1101162 2024-10-15T17:11:06 Z alexander707070 Wombats (IOI13_wombats) C++14
76 / 100
 20000 ms 23296 KB 
#include<bits/stdc++.h>
#include "wombats.h"
using namespace std;
 
const int bucket_sz=507;
 
const int inf=1e9;
 
int n,m;
int rows[5007][207];
int cols[207][5007];
 
int bucket[5007];
pair<int,int> seg[5007];
 
int dp[207][207][2][207];
int optl[207],optr[207];
 
int getsum(int row,int l,int r){
    return rows[row][r]-rows[row][l-1];
}
 
void calcdp(int buck,int from,int to){
 
    for(int fin=1;fin<=m;fin++){
        for(int c=1;c<=m;c++){
            dp[buck][fin][to%2][c]=getsum(to,min(c,fin),max(c,fin)-1);
        }
 
        for(int r=to-1;r>=from;r--){
            
            optl[1]=dp[buck][fin][1-r%2][1]+cols[1][r];
            for(int c=2;c<=m;c++){
                optl[c]=min(optl[c-1]+getsum(r,c-1,c-1),dp[buck][fin][1-r%2][c]+cols[c][r]);
            }
 
            optr[m]=dp[buck][fin][1-r%2][m]+cols[m][r];
            for(int c=m-1;c>=1;c--){
                optr[c]=min(optr[c+1]+getsum(r,c,c),dp[buck][fin][1-r%2][c]+cols[c][r]);
            }
 
            for(int c=1;c<=m;c++){
                dp[buck][fin][r%2][c]=min(optl[c],optr[c]);
            }
        }
    }
}
 
int dp2[207][2][207];
 
int dist(int buck,int from,int to){
    return dp[buck][to][seg[buck].first%2][from];
}

void optdp(int start,int buck,int l,int r,int optl,int optr){
    if(l>r)return;
    
    int mid=(l+r)/2;
    int opt=optl;

    dp2[start][buck%2][mid]=inf;

    for(int i=optl;i<=optr;i++){
        if(dp2[start][1-buck%2][i] + cols[i][seg[buck-1].second] + dist(buck,i,mid) < dp2[start][buck%2][mid]){
            dp2[start][buck%2][mid]=dp2[start][1-buck%2][i] + cols[i][seg[buck-1].second] + dist(buck,i,mid);
            opt=i;
        }
    }

    optdp(start,buck,l,mid-1,optl,opt);
    optdp(start,buck,mid+1,r,opt,optr);
}
 
void solve(){
    for(int start=1;start<=m;start++){
        for(int c=1;c<=m;c++){
            dp2[start][0][c]=dist(0,start,c);
        }
    }

    for(int start=1;start<=m;start++){
        for(int i=1;i<=n/bucket_sz;i++){
            optdp(start,i,1,m,1,m);
        }
    }
}
 
void init(int R, int C, int H[5000][200], int V[5000][200]) {
//void init(int R,int C,vector< vector<int> > H,vector< vector<int> > V){
    n=R; m=C;
 
    for(int i=1;i<=n;i++){
        for(int f=1;f<=m-1;f++){
            rows[i][f]=H[i-1][f-1];
            rows[i][f]+=rows[i][f-1];
        }
    }
    for(int i=1;i<=m;i++){
        for(int f=1;f<=n-1;f++){
            cols[i][f]=V[f-1][i-1];
        }
    }
 
    for(int i=1;i<=n;i++){
        bucket[i]=i/bucket_sz;
        if(seg[bucket[i]].first==0)seg[bucket[i]].first=i;
        seg[bucket[i]].second=i;
    }
 
    for(int i=0;i<=n/bucket_sz;i++){
        calcdp(i,seg[i].first,seg[i].second);
    }
    solve();
}
 
void changeH(int P, int Q, int W) {
    P++; Q++;
 
    int dif=W-(rows[P][Q]-rows[P][Q-1]);
    for(int i=Q;i<=m-1;i++){
        rows[P][i]+=dif;
    }
    
    calcdp(bucket[P],seg[bucket[P]].first,seg[bucket[P]].second);
    solve();
}
 
void changeV(int P, int Q, int W){
    P++; Q++;
    cols[Q][P]=W;
 
    if(bucket[P]==bucket[P+1]){
        calcdp(bucket[P],seg[bucket[P]].first,seg[bucket[P]].second);
    }

    solve();
}
 
int escape(int V1, int V2) {
    V1++; V2++;
 
    return dp2[V1][(n/bucket_sz)%2][V2];
}
 
/*int main(){
 
    nit(4,1,{{}},{{1},{1},{1},{1}});
 
    cout<<escape(0,0)<<"\n";
    changeV(0,0,2);
    cout<<escape(0,0)<<"\n";
    changeV(1,0,2);
    cout<<escape(0,0)<<"\n";
    changeV(2,0,2);
    cout<<escape(0,0)<<"\n";
 
    init(3,4,{{0,2,5},{7,1,1},{0,4,0}},{{0,0,0,2},{0,3,4,7}});
 
    cout<<escape(2,1)<<"\n";
    cout<<escape(3,3)<<"\n";
 
    changeV(0,0,5);
    changeH(1,1,6);
 
    cout<<escape(2,1)<<"\n";
 
	return 0;
}*/

Compilation message

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
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12880 KB Output is correct
2 Correct 3 ms 12880 KB Output is correct
3 Correct 40 ms 14404 KB Output is correct
4 Correct 4 ms 12880 KB Output is correct
5 Correct 4 ms 12880 KB Output is correct
6 Correct 1 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4604 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4600 KB Output is correct
2 Correct 1 ms 4548 KB Output is correct
3 Correct 1 ms 4432 KB Output is correct
4 Correct 1 ms 6480 KB Output is correct
5 Correct 1 ms 6480 KB Output is correct
6 Correct 1 ms 6480 KB Output is correct
7 Correct 1 ms 6480 KB Output is correct
8 Correct 1 ms 6480 KB Output is correct
9 Correct 1 ms 6480 KB Output is correct
10 Correct 1 ms 6480 KB Output is correct
11 Correct 41 ms 7504 KB Output is correct
12 Correct 1 ms 6480 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 333 ms 8784 KB Output is correct
2 Correct 316 ms 8804 KB Output is correct
3 Correct 363 ms 8784 KB Output is correct
4 Correct 340 ms 8784 KB Output is correct
5 Correct 313 ms 8784 KB Output is correct
6 Correct 1 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 2 ms 4432 KB Output is correct
9 Correct 1666 ms 8808 KB Output is correct
10 Correct 1 ms 6480 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 19024 KB Output is correct
2 Correct 11 ms 19024 KB Output is correct
3 Correct 13 ms 18988 KB Output is correct
4 Correct 44 ms 19604 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 329 ms 8808 KB Output is correct
2 Correct 309 ms 8784 KB Output is correct
3 Correct 342 ms 8784 KB Output is correct
4 Correct 330 ms 8784 KB Output is correct
5 Correct 340 ms 8784 KB Output is correct
6 Correct 11 ms 19024 KB Output is correct
7 Correct 11 ms 19024 KB Output is correct
8 Correct 11 ms 19024 KB Output is correct
9 Correct 32 ms 19800 KB Output is correct
10 Correct 4 ms 12880 KB Output is correct
11 Correct 4 ms 12880 KB Output is correct
12 Correct 41 ms 14408 KB Output is correct
13 Correct 4 ms 12880 KB Output is correct
14 Correct 4 ms 12892 KB Output is correct
15 Correct 1 ms 4432 KB Output is correct
16 Correct 1 ms 4604 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 1 ms 6648 KB Output is correct
19 Correct 1 ms 6480 KB Output is correct
20 Correct 1 ms 6480 KB Output is correct
21 Correct 1 ms 6480 KB Output is correct
22 Correct 1 ms 6480 KB Output is correct
23 Correct 1 ms 6480 KB Output is correct
24 Correct 1 ms 6480 KB Output is correct
25 Correct 47 ms 7392 KB Output is correct
26 Correct 1 ms 6480 KB Output is correct
27 Correct 1653 ms 8816 KB Output is correct
28 Correct 9281 ms 21416 KB Output is correct
29 Correct 9693 ms 20604 KB Output is correct
30 Correct 9473 ms 20584 KB Output is correct
31 Correct 9774 ms 22468 KB Output is correct
32 Correct 2 ms 6480 KB Output is correct

Subtask #6
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 353 ms 8804 KB Output is correct
2 Correct 317 ms 8784 KB Output is correct
3 Correct 331 ms 8784 KB Output is correct
4 Correct 332 ms 8784 KB Output is correct
5 Correct 319 ms 8952 KB Output is correct
6 Correct 11 ms 19024 KB Output is correct
7 Correct 12 ms 19024 KB Output is correct
8 Correct 11 ms 19024 KB Output is correct
9 Correct 31 ms 19680 KB Output is correct
10 Correct 4 ms 12880 KB Output is correct
11 Correct 4 ms 12880 KB Output is correct
12 Correct 43 ms 14408 KB Output is correct
13 Correct 4 ms 12880 KB Output is correct
14 Correct 4 ms 12880 KB Output is correct
15 Correct 1092 ms 22540 KB Output is correct
16 Execution timed out 20042 ms 23296 KB Time limit exceeded
17 Halted 0 ms 0 KB -