Submission #287432

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
287432	2020-08-31T16:59:42 Z	TadijaSebez	Cultivation (JOI17_cultivation)	C++11	65 / 100	2000 ms	2552 KB

cultivation

#include <bits/stdc++.h>
using namespace std;
#define pii pair<int,int>
#define ll long long
void ckmn(ll&a,ll b){a=min(a,b);}
void ckmx(int&a,int b){a=max(a,b);}
const int N=305;
const int inf=1e9+7;
int sz[N],SWX[N][N],SWU[N][N],SWD[N][N],SWR[N][N],x[N],y[N],n,H,W;
int L[N],lsz,T[N],tsz,SM[N*N],U[N*N],D[N*N],R[N*N],ssz,esz;
pii evs[N];
void unq(int*a,int&n){sort(a+1,a+1+n);n=unique(a+1,a+1+n)-a-1;}
int main(){
	scanf("%i %i %i",&H,&W,&n);
	for(int i=1;i<=n;i++){
		scanf("%i %i",&x[i],&y[i]);
		L[++lsz]=y[i]-1;
		if(y[i]>1)T[++tsz]=y[i]-1;
	}
	T[++tsz]=W;unq(T,tsz);
	for(int i=1;i<=tsz;i++){
		esz=0;
		for(int j=1;j<=n;j++){
			if(y[j]<=T[i]){
				SM[++ssz]=T[i]-y[j];
				evs[++esz]={T[i]-y[j],x[j]};
			}
		}
		multiset<int> dif,pts;
		pts.insert(0);pts.insert(H+1);
		dif.insert(H+1);
		sort(evs+1,evs+1+esz);
		for(int j=1,k;j<=esz;j=k){
			for(k=j;k<=esz&&evs[j].first==evs[k].first;k++){
				auto it=pts.insert(evs[k].second);
				dif.erase(dif.find(*next(it)-*prev(it)));
				dif.insert(*next(it)-*it);
				dif.insert(*it-*prev(it));
			}
			sz[i]++;
			SWX[i][sz[i]]=evs[j].first;
			SWU[i][sz[i]]=H-*prev(prev(pts.end()));
			SWD[i][sz[i]]=*next(pts.begin())-1;
			SWR[i][sz[i]]=*dif.rbegin()-1;
		}
	}
	unq(L,lsz);
	unq(SM,ssz);
	ll ans=inf*2;
	for(int i=lsz,j=tsz-1;i>=1;i--){
		for(;j>=1&&L[i]<T[j];j--){
			for(int k=1,o=1;k<=ssz;k++){
				while(o<=sz[j]&&SWX[j][o]<=SM[k])o++;
				if(o>1)ckmx(U[k],SWU[j][o-1]),ckmx(D[k],SWD[j][o-1]),ckmx(R[k],SWR[j][o-1]);
				else U[k]=inf,D[k]=inf,R[k]=inf;
			}
		}
		auto Try=[&](int k,int o){
			int r=max(SM[k]-L[i],SWX[tsz][o]);
			int _d=max(D[k],SWD[tsz][o]);
			int _u=max(U[k],SWU[tsz][o]);
			int _r=max(R[k],SWR[tsz][o]);
			ckmn(ans,(ll)max(_r,_u+_d)+r+L[i]);
		};
		for(int k=1;k<=ssz;k++){
			for(int o=1;o<=sz[tsz];o++){
				Try(k,o);
			}
		}
	}
	printf("%lld\n",ans);
	return 0;
}

Compilation message

cultivation.cpp: In function 'int main()':
cultivation.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   14 |  scanf("%i %i %i",&H,&W,&n);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~
cultivation.cpp:16:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 |   scanf("%i %i",&x[i],&y[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	512 KB	Output is correct
19	Correct	3 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	1 ms	512 KB	Output is correct
22	Correct	2 ms	512 KB	Output is correct
23	Correct	1 ms	512 KB	Output is correct
24	Correct	3 ms	640 KB	Output is correct
25	Correct	4 ms	512 KB	Output is correct
26	Correct	4 ms	640 KB	Output is correct
27	Correct	4 ms	640 KB	Output is correct
28	Correct	3 ms	640 KB	Output is correct
29	Correct	4 ms	640 KB	Output is correct
30	Correct	7 ms	640 KB	Output is correct
31	Correct	4 ms	640 KB	Output is correct
32	Correct	6 ms	640 KB	Output is correct

Subtask #3
0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	512 KB	Output is correct
19	Correct	3 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	1 ms	512 KB	Output is correct
22	Correct	2 ms	512 KB	Output is correct
23	Correct	1 ms	512 KB	Output is correct
24	Correct	3 ms	640 KB	Output is correct
25	Correct	4 ms	512 KB	Output is correct
26	Correct	4 ms	640 KB	Output is correct
27	Correct	4 ms	640 KB	Output is correct
28	Correct	3 ms	640 KB	Output is correct
29	Correct	4 ms	640 KB	Output is correct
30	Correct	7 ms	640 KB	Output is correct
31	Correct	4 ms	640 KB	Output is correct
32	Correct	6 ms	640 KB	Output is correct
33	Execution timed out	2037 ms	2552 KB	Time limit exceeded
34	Halted	0 ms	0 KB	-

Subtask #4
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	2 ms	512 KB	Output is correct
3	Correct	2 ms	512 KB	Output is correct
4	Correct	1 ms	512 KB	Output is correct
5	Correct	2 ms	504 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	512 KB	Output is correct
8	Correct	4 ms	512 KB	Output is correct
9	Correct	1 ms	512 KB	Output is correct
10	Correct	2 ms	512 KB	Output is correct
11	Correct	1 ms	512 KB	Output is correct
12	Correct	1 ms	512 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	2 ms	512 KB	Output is correct
15	Correct	1 ms	512 KB	Output is correct
16	Correct	3 ms	512 KB	Output is correct
17	Correct	1 ms	512 KB	Output is correct
18	Correct	3 ms	512 KB	Output is correct
19	Correct	1 ms	512 KB	Output is correct
20	Correct	3 ms	512 KB	Output is correct

Subtask #5
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	2 ms	512 KB	Output is correct
3	Correct	2 ms	512 KB	Output is correct
4	Correct	1 ms	512 KB	Output is correct
5	Correct	2 ms	504 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	512 KB	Output is correct
8	Correct	4 ms	512 KB	Output is correct
9	Correct	1 ms	512 KB	Output is correct
10	Correct	2 ms	512 KB	Output is correct
11	Correct	1 ms	512 KB	Output is correct
12	Correct	1 ms	512 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	2 ms	512 KB	Output is correct
15	Correct	1 ms	512 KB	Output is correct
16	Correct	3 ms	512 KB	Output is correct
17	Correct	1 ms	512 KB	Output is correct
18	Correct	3 ms	512 KB	Output is correct
19	Correct	1 ms	512 KB	Output is correct
20	Correct	3 ms	512 KB	Output is correct
21	Correct	105 ms	928 KB	Output is correct
22	Correct	171 ms	896 KB	Output is correct
23	Correct	171 ms	896 KB	Output is correct
24	Correct	172 ms	1016 KB	Output is correct
25	Correct	177 ms	972 KB	Output is correct
26	Correct	27 ms	640 KB	Output is correct
27	Correct	173 ms	1016 KB	Output is correct
28	Correct	171 ms	896 KB	Output is correct
29	Correct	172 ms	896 KB	Output is correct
30	Correct	191 ms	896 KB	Output is correct
31	Correct	184 ms	896 KB	Output is correct
32	Correct	170 ms	896 KB	Output is correct
33	Correct	172 ms	896 KB	Output is correct
34	Correct	174 ms	972 KB	Output is correct
35	Correct	176 ms	896 KB	Output is correct
36	Correct	175 ms	896 KB	Output is correct

Subtask #6
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	512 KB	Output is correct
19	Correct	3 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	1 ms	512 KB	Output is correct
22	Correct	2 ms	512 KB	Output is correct
23	Correct	1 ms	512 KB	Output is correct
24	Correct	3 ms	640 KB	Output is correct
25	Correct	4 ms	512 KB	Output is correct
26	Correct	4 ms	640 KB	Output is correct
27	Correct	4 ms	640 KB	Output is correct
28	Correct	3 ms	640 KB	Output is correct
29	Correct	4 ms	640 KB	Output is correct
30	Correct	7 ms	640 KB	Output is correct
31	Correct	4 ms	640 KB	Output is correct
32	Correct	6 ms	640 KB	Output is correct
33	Execution timed out	2037 ms	2552 KB	Time limit exceeded
34	Halted	0 ms	0 KB	-

Submission #287432

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 0 / 15.0

Subtask #4 30.0 / 30.0

Subtask #5 20.0 / 20.0

Subtask #6 0 / 20.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
0 / 15.0

Subtask #4
30.0 / 30.0

Subtask #5
20.0 / 20.0

Subtask #6
0 / 20.0