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Submission #1101167

# Submission time Handle Problem Language Result Execution time Memory
1101167 2024-10-15T17:14:25 Z alexander707070 Wombats (IOI13_wombats) C++14
76 / 100
 20000 ms 28032 KB 
#include<bits/stdc++.h>
#include "wombats.h"
using namespace std;
 
const int bucket_sz=207;
 
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 16976 KB Output is correct
2 Correct 3 ms 16976 KB Output is correct
3 Correct 52 ms 18628 KB Output is correct
4 Correct 3 ms 16976 KB Output is correct
5 Correct 3 ms 17048 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 4432 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4604 KB Output is correct
2 Correct 1 ms 4432 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 6656 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 59 ms 7508 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 334 ms 8784 KB Output is correct
2 Correct 351 ms 8784 KB Output is correct
3 Correct 343 ms 8784 KB Output is correct
4 Correct 353 ms 8784 KB Output is correct
5 Correct 334 ms 8952 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 4432 KB Output is correct
9 Correct 1704 ms 8812 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 9 ms 23120 KB Output is correct
2 Correct 9 ms 23120 KB Output is correct
3 Correct 9 ms 23304 KB Output is correct
4 Correct 29 ms 24060 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 350 ms 8784 KB Output is correct
2 Correct 329 ms 9032 KB Output is correct
3 Correct 330 ms 8784 KB Output is correct
4 Correct 335 ms 8784 KB Output is correct
5 Correct 320 ms 8952 KB Output is correct
6 Correct 10 ms 23120 KB Output is correct
7 Correct 13 ms 23120 KB Output is correct
8 Correct 12 ms 23120 KB Output is correct
9 Correct 30 ms 23888 KB Output is correct
10 Correct 4 ms 17144 KB Output is correct
11 Correct 4 ms 16976 KB Output is correct
12 Correct 43 ms 18504 KB Output is correct
13 Correct 4 ms 17040 KB Output is correct
14 Correct 3 ms 17148 KB Output is correct
15 Correct 1 ms 4432 KB Output is correct
16 Correct 1 ms 4540 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 2 ms 6480 KB Output is correct
19 Correct 2 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 2 ms 6480 KB Output is correct
25 Correct 53 ms 7544 KB Output is correct
26 Correct 1 ms 6480 KB Output is correct
27 Correct 1737 ms 8804 KB Output is correct
28 Correct 5431 ms 25364 KB Output is correct
29 Correct 5129 ms 24828 KB Output is correct
30 Correct 5003 ms 24800 KB Output is correct
31 Correct 5793 ms 26488 KB Output is correct
32 Correct 1 ms 6480 KB Output is correct

Subtask #6
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 350 ms 8784 KB Output is correct
2 Correct 326 ms 8820 KB Output is correct
3 Correct 350 ms 8784 KB Output is correct
4 Correct 332 ms 8784 KB Output is correct
5 Correct 328 ms 8784 KB Output is correct
6 Correct 10 ms 23288 KB Output is correct
7 Correct 10 ms 23120 KB Output is correct
8 Correct 10 ms 23120 KB Output is correct
9 Correct 32 ms 23868 KB Output is correct
10 Correct 4 ms 16976 KB Output is correct
11 Correct 4 ms 16976 KB Output is correct
12 Correct 45 ms 18432 KB Output is correct
13 Correct 3 ms 16976 KB Output is correct
14 Correct 4 ms 17048 KB Output is correct
15 Correct 970 ms 26444 KB Output is correct
16 Execution timed out 20049 ms 28032 KB Time limit exceeded
17 Halted 0 ms 0 KB -