Submission #238513

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
238513	2020-06-11T15:24:30 Z	Pbezz	Lasers (NOI19_lasers)	C++14	100 / 100	507 ms	60536 KB

lasers

#include <bits/stdc++.h>
using namespace std;

#define loop(i,n) for (ll i = 0; i < n; i++)

#define ll long long
#define INF 1e9+5
#define MAXN 300007
#define pb push_back 
#define mp make_pair
typedef pair<ll,ll> pii;


int main(){

	ll l,r,i,j,k,x,maxi=0;
	cin>>l>>r;

	vector<vector<ll>>row(r);
	vector<vector<ll>>dp(r); 

	for(i=0;i<r;i++){

	cin>>x;
	maxi=max(maxi,x);
	dp[i].pb(0);

	for(j=1;j<=x;j++){
	cin>>k;
	row[i].pb(k);
	dp[i].pb(dp[i][j-1]+k);
	}

}

	if(maxi==1){//só há um por linha

	ll savedL=INF, savedR=-1;

	for(i=0;i<r;i++){

	k=row[i][0];

	savedR = max(savedR , k);

	savedL = min(savedL, l-k-1);

}

	k = savedL+1;

	savedR=max(savedR,savedL+1);
	k+=(l-savedR);
	printf("%lld\n",l-k);


	}else{
	ll left, right,m,cur=0;


	vector<pii>overall;

	for(i=0;i<r;i++){
	m=dp[i][dp[i].size()-1];
	vector<pii>intervals;

	if(m==l){
	cout<<l<<'\n';
	return 0;
}

	for(j=0;j<(ll)dp[i].size();j++){

		left=dp[i][j]+1;
		right=l-(m-left)-1;

		if(left>right)continue;

		intervals.pb({ left,1 });
		intervals.pb({ right+1,-1 });//a partir de right, não está safe

	}
	sort(intervals.begin(),intervals.end());

	for(j=0;j<(ll)intervals.size();j++){

		cur+=intervals[j].second;

		while(j+1<(ll)intervals.size() && intervals[j+1].first==intervals[j].first){
		j++;
		cur+=intervals[j].second;
		}

		if(cur==0){
	//a partir desta posição, os lasers foram apanhados em todas as configurações

		if(j==(ll)intervals.size()-1){
		overall.pb({ intervals[j].first, 1 });
		overall.pb({ l+1, -1 });
		}else{
		overall.pb({ intervals[j].first, 1 });
		overall.pb({ intervals[j+1].first, -1 });
		}


		}

	}


}
	sort(overall.begin(),overall.end());

/*
	for(j=0;j<(ll)overall.size();j++){
		cout<<overall[j].first<<" "<<overall[j].second<<"   ";}
cout<<endl;*/

	cur=0; ll ans=0;
	for(i=0;i<(ll)overall.size();i++){

		if(overall[i].first==l+1)break;

		cur+=overall[i].second;

		while(i<(ll)overall.size()-1 && overall[i+1].first==overall[i].first){

		i++;
		cur+=overall[i].second;

		}

		if(cur>0){

		ans+=(overall[i+1].first-overall[i].first);
		

	}

}

	cout<<ans<<endl;


}
return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	256 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	256 KB	Output is correct
5	Correct	5 ms	256 KB	Output is correct
6	Correct	4 ms	256 KB	Output is correct
7	Correct	4 ms	256 KB	Output is correct
8	Correct	5 ms	256 KB	Output is correct
9	Correct	5 ms	256 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct

Subtask #2
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	256 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	256 KB	Output is correct
5	Correct	5 ms	256 KB	Output is correct
6	Correct	4 ms	256 KB	Output is correct
7	Correct	4 ms	256 KB	Output is correct
8	Correct	5 ms	256 KB	Output is correct
9	Correct	5 ms	256 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	6 ms	384 KB	Output is correct
12	Correct	507 ms	55928 KB	Output is correct
13	Correct	4 ms	256 KB	Output is correct
14	Correct	5 ms	256 KB	Output is correct
15	Correct	6 ms	384 KB	Output is correct
16	Correct	6 ms	384 KB	Output is correct
17	Correct	506 ms	56312 KB	Output is correct
18	Correct	5 ms	256 KB	Output is correct
19	Correct	4 ms	256 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct

Subtask #3
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	146 ms	28868 KB	Output is correct
2	Correct	29 ms	5156 KB	Output is correct
3	Correct	40 ms	5520 KB	Output is correct
4	Correct	149 ms	25552 KB	Output is correct
5	Correct	76 ms	13528 KB	Output is correct
6	Correct	158 ms	28100 KB	Output is correct
7	Correct	8 ms	832 KB	Output is correct
8	Correct	172 ms	35344 KB	Output is correct
9	Correct	82 ms	15692 KB	Output is correct
10	Correct	157 ms	32192 KB	Output is correct

Subtask #4
21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	256 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	5 ms	432 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct

Subtask #5
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	146 ms	28868 KB	Output is correct
2	Correct	29 ms	5156 KB	Output is correct
3	Correct	40 ms	5520 KB	Output is correct
4	Correct	149 ms	25552 KB	Output is correct
5	Correct	76 ms	13528 KB	Output is correct
6	Correct	158 ms	28100 KB	Output is correct
7	Correct	8 ms	832 KB	Output is correct
8	Correct	172 ms	35344 KB	Output is correct
9	Correct	82 ms	15692 KB	Output is correct
10	Correct	157 ms	32192 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	4 ms	256 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	4 ms	384 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	5 ms	384 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct
19	Correct	5 ms	432 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	436 ms	59144 KB	Output is correct
22	Correct	68 ms	6124 KB	Output is correct
23	Correct	47 ms	6612 KB	Output is correct
24	Correct	188 ms	26504 KB	Output is correct
25	Correct	433 ms	59000 KB	Output is correct
26	Correct	147 ms	16016 KB	Output is correct
27	Correct	64 ms	5480 KB	Output is correct
28	Correct	423 ms	58872 KB	Output is correct
29	Correct	440 ms	59256 KB	Output is correct
30	Correct	140 ms	17192 KB	Output is correct

Subtask #6
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	256 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	256 KB	Output is correct
5	Correct	5 ms	256 KB	Output is correct
6	Correct	4 ms	256 KB	Output is correct
7	Correct	4 ms	256 KB	Output is correct
8	Correct	5 ms	256 KB	Output is correct
9	Correct	5 ms	256 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	6 ms	384 KB	Output is correct
12	Correct	507 ms	55928 KB	Output is correct
13	Correct	4 ms	256 KB	Output is correct
14	Correct	5 ms	256 KB	Output is correct
15	Correct	6 ms	384 KB	Output is correct
16	Correct	6 ms	384 KB	Output is correct
17	Correct	506 ms	56312 KB	Output is correct
18	Correct	5 ms	256 KB	Output is correct
19	Correct	4 ms	256 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	146 ms	28868 KB	Output is correct
22	Correct	29 ms	5156 KB	Output is correct
23	Correct	40 ms	5520 KB	Output is correct
24	Correct	149 ms	25552 KB	Output is correct
25	Correct	76 ms	13528 KB	Output is correct
26	Correct	158 ms	28100 KB	Output is correct
27	Correct	8 ms	832 KB	Output is correct
28	Correct	172 ms	35344 KB	Output is correct
29	Correct	82 ms	15692 KB	Output is correct
30	Correct	157 ms	32192 KB	Output is correct
31	Correct	5 ms	384 KB	Output is correct
32	Correct	4 ms	256 KB	Output is correct
33	Correct	5 ms	384 KB	Output is correct
34	Correct	5 ms	384 KB	Output is correct
35	Correct	4 ms	384 KB	Output is correct
36	Correct	5 ms	384 KB	Output is correct
37	Correct	5 ms	384 KB	Output is correct
38	Correct	5 ms	384 KB	Output is correct
39	Correct	5 ms	432 KB	Output is correct
40	Correct	5 ms	384 KB	Output is correct
41	Correct	436 ms	59144 KB	Output is correct
42	Correct	68 ms	6124 KB	Output is correct
43	Correct	47 ms	6612 KB	Output is correct
44	Correct	188 ms	26504 KB	Output is correct
45	Correct	433 ms	59000 KB	Output is correct
46	Correct	147 ms	16016 KB	Output is correct
47	Correct	64 ms	5480 KB	Output is correct
48	Correct	423 ms	58872 KB	Output is correct
49	Correct	440 ms	59256 KB	Output is correct
50	Correct	140 ms	17192 KB	Output is correct
51	Correct	72 ms	7056 KB	Output is correct
52	Correct	507 ms	59972 KB	Output is correct
53	Correct	485 ms	59896 KB	Output is correct
54	Correct	130 ms	10320 KB	Output is correct
55	Correct	293 ms	21956 KB	Output is correct
56	Correct	173 ms	20560 KB	Output is correct
57	Correct	193 ms	17448 KB	Output is correct
58	Correct	498 ms	60536 KB	Output is correct
59	Correct	144 ms	11072 KB	Output is correct
60	Correct	201 ms	13768 KB	Output is correct

Submission #238513

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 14.0 / 14.0

Subtask #3 20.0 / 20.0

Subtask #4 21.0 / 21.0

Subtask #5 22.0 / 22.0

Subtask #6 13.0 / 13.0

Subtask #1
10.0 / 10.0

Subtask #2
14.0 / 14.0

Subtask #3
20.0 / 20.0

Subtask #4
21.0 / 21.0

Subtask #5
22.0 / 22.0

Subtask #6
13.0 / 13.0