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Submission #1101161

# Submission time Handle Problem Language Result Execution time Memory
1101161 2024-10-15T17:09:01 Z alexander707070 Wombats (IOI13_wombats) C++14
76 / 100
 20000 ms 20824 KB 
#include<bits/stdc++.h>
#include "wombats.h"
using namespace std;
 
const int bucket_sz=1005;
 
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 10832 KB Output is correct
2 Correct 4 ms 10888 KB Output is correct
3 Correct 39 ms 12396 KB Output is correct
4 Correct 4 ms 10832 KB Output is correct
5 Correct 5 ms 11020 KB Output is correct
6 Correct 1 ms 4444 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 4432 KB Output is correct
2 Correct 1 ms 4612 KB Output is correct
3 Correct 1 ms 4432 KB Output is correct
4 Correct 2 ms 6480 KB Output is correct
5 Correct 2 ms 6480 KB Output is correct
6 Correct 2 ms 6480 KB Output is correct
7 Correct 2 ms 6480 KB Output is correct
8 Correct 2 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 43 ms 7592 KB Output is correct
12 Correct 2 ms 6480 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 337 ms 8800 KB Output is correct
2 Correct 312 ms 8812 KB Output is correct
3 Correct 337 ms 8816 KB Output is correct
4 Correct 329 ms 8784 KB Output is correct
5 Correct 310 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 1 ms 4432 KB Output is correct
9 Correct 1638 ms 8804 KB Output is correct
10 Correct 2 ms 6480 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 16976 KB Output is correct
2 Correct 15 ms 16984 KB Output is correct
3 Correct 14 ms 16808 KB Output is correct
4 Correct 34 ms 17736 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 334 ms 8796 KB Output is correct
2 Correct 319 ms 8784 KB Output is correct
3 Correct 329 ms 8784 KB Output is correct
4 Correct 338 ms 8784 KB Output is correct
5 Correct 313 ms 8784 KB Output is correct
6 Correct 15 ms 16976 KB Output is correct
7 Correct 15 ms 16832 KB Output is correct
8 Correct 15 ms 16976 KB Output is correct
9 Correct 36 ms 17708 KB Output is correct
10 Correct 4 ms 10832 KB Output is correct
11 Correct 4 ms 10832 KB Output is correct
12 Correct 40 ms 12360 KB Output is correct
13 Correct 5 ms 11004 KB Output is correct
14 Correct 5 ms 10832 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 2 ms 6480 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 2 ms 6652 KB Output is correct
23 Correct 2 ms 6480 KB Output is correct
24 Correct 2 ms 6576 KB Output is correct
25 Correct 40 ms 7436 KB Output is correct
26 Correct 2 ms 6480 KB Output is correct
27 Correct 1648 ms 8816 KB Output is correct
28 Correct 17840 ms 19288 KB Output is correct
29 Correct 18305 ms 18656 KB Output is correct
30 Correct 17152 ms 18620 KB Output is correct
31 Correct 18615 ms 20320 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 328 ms 8784 KB Output is correct
2 Correct 323 ms 8784 KB Output is correct
3 Correct 336 ms 8784 KB Output is correct
4 Correct 344 ms 8808 KB Output is correct
5 Correct 325 ms 8784 KB Output is correct
6 Correct 14 ms 16976 KB Output is correct
7 Correct 15 ms 16988 KB Output is correct
8 Correct 16 ms 16976 KB Output is correct
9 Correct 33 ms 17660 KB Output is correct
10 Correct 4 ms 10832 KB Output is correct
11 Correct 4 ms 10832 KB Output is correct
12 Correct 39 ms 12296 KB Output is correct
13 Correct 4 ms 10832 KB Output is correct
14 Correct 4 ms 10832 KB Output is correct
15 Correct 1317 ms 20420 KB Output is correct
16 Execution timed out 20052 ms 20824 KB Time limit exceeded
17 Halted 0 ms 0 KB -