oj.uz

답안 #301210

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
301210 2020-09-17T17:48:43 Z AMO5 별자리 3 (JOI20_constellation3) C++17
100 / 100
 473 ms 29776 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long 
#define ii pair<int,int>
#define fi first
#define se second

const int mxn = 2e5+5;
int n,m;
ll tree[mxn*4];
int h[mxn],pre[mxn],nxt[mxn];

struct star{
	int c,r;
	ll val;
	bool operator < (const star &rhs)const{
		return r>rhs.r;
	}
};

star stars[mxn];
vector<int>ind[mxn]; //keeping ind

ll query(int pos, int id, int le, int ri){
	if(le==ri){
		return tree[id];
	}
	int mid=(le+ri)>>1;
	ll res =tree[id];
	if(pos<=mid)res += query(pos,id*2,le,mid);
	else res+=query(pos,id*2+1,mid+1,ri);
	return res;
}

void upd(int x, int y, ll v, int id, int le, int ri){
	if(x>ri||le>y)return;
	if(x<=le&&ri<=y){
		tree[id]+=v;
		return;
	}
	int mid=(le+ri)>>1;
	upd(x,y,v,id*2,le,mid);
	upd(x,y,v,id*2+1,mid+1,ri);
	return;
}

int main(){
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin>>n;
	for(int i=1; i<=n; i++){
		cin>>h[i];
		h[i]=n-h[i];
	}
	ll ans = 0ll;
	h[0]=h[n+1]=0;
	cin>>m;
	for(int i=0; i<m; i++){
		int c,r; ll v;
		cin>>c>>r>>v;
		ans += v;
		r = n-r+1;
		stars[i]={c,r,v};
	}
	sort(stars,stars+m);
	for(int i=0; i<m; i++)
		ind[stars[i].c].emplace_back(i);
	vector<int>h_ind;
	set<ii>ss;
	h_ind.push_back(n+1);
	ss.insert(ii(h[n+1],n+1));
	for(int i=n; i>=1; i--){
		while(!h_ind.empty()&&h[h_ind.back()]>=h[i]){
			ss.erase({h[h_ind.back()],h_ind.back()});
			h_ind.pop_back();
		}
		/*
		cerr<<i<<": af \n";
		for(int j:h_ind)cerr<<j<<" ";
		cerr<<"\n";
		for(ii x:ss)cerr<<x.fi<<" "<<x.se<<"\n";
		cerr<<"\n";
		// */ 
		for(int j:ind[i]){
			auto it = ss.lower_bound({stars[j].r,-1});
			it = prev(it);
			//cerr<<j<<" "<<stars[j].r<<" "<<it->fi<<" "<<it->se<<"\n";
			nxt[j]=it->se-1;
			//cerr<<j<<" ... "<<nxt[j]<<"\n";
		}
		ss.emplace(h[i],i);
		h_ind.emplace_back(i);
	}
	ss=set<ii>();
	h_ind=vector<int>();
	h_ind.push_back(0);
	ss.insert(ii(h[0],0));
	for(int i=1; i<=n; i++){
		while(!h_ind.empty()&&h[h_ind.back()]>=h[i]){
			ss.erase({h[h_ind.back()],h_ind.back()});
			h_ind.pop_back();
		}
		for(int j:ind[i]){
			auto it = ss.lower_bound({stars[j].r,-1});
			it=prev(it);
			pre[j]=it->se+1;
		}
		ss.emplace(h[i],i);
		h_ind.emplace_back(i);
	}
	/*
	for(int i=0; i<m; i++){
		cerr<<stars[i].c<<" "<<stars[i].r<<" "<<stars[i].val<<" "<<pre[i]<<" "<<nxt[i]<<"\n";
	}
	// */ 
	for(int i=0; i<m; i++){
		ll val = stars[i].val-query(stars[i].c,1,1,n);
		//cerr<<i<<" "<<stars[i].c<<": "<<val<<" "<<stars[i].val<<"\n";
		if(val>0){
			ans -= val;
			//cerr<<"upd "<<pre[i]<<" "<<nxt[i]<<": "<<ans<<"\n";
			upd(pre[i],nxt[i],val,1,1,n);
		}
	}
	cout<<ans<<endl;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 5120 KB Output is correct
7 Correct 4 ms 5120 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 5 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 5120 KB Output is correct
13 Correct 4 ms 5120 KB Output is correct
14 Correct 5 ms 5120 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 4 ms 5120 KB Output is correct
19 Correct 4 ms 5120 KB Output is correct
20 Correct 4 ms 5120 KB Output is correct
21 Correct 5 ms 5248 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 5120 KB Output is correct
7 Correct 4 ms 5120 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 5 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 5120 KB Output is correct
13 Correct 4 ms 5120 KB Output is correct
14 Correct 5 ms 5120 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 4 ms 5120 KB Output is correct
19 Correct 4 ms 5120 KB Output is correct
20 Correct 4 ms 5120 KB Output is correct
21 Correct 5 ms 5248 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 5 ms 5248 KB Output is correct
24 Correct 5 ms 5248 KB Output is correct
25 Correct 7 ms 5248 KB Output is correct
26 Correct 5 ms 5248 KB Output is correct
27 Correct 6 ms 5248 KB Output is correct
28 Correct 5 ms 5248 KB Output is correct
29 Correct 6 ms 5248 KB Output is correct
30 Correct 6 ms 5248 KB Output is correct
31 Correct 5 ms 5248 KB Output is correct
32 Correct 6 ms 5248 KB Output is correct
33 Correct 6 ms 5248 KB Output is correct
34 Correct 6 ms 5248 KB Output is correct
35 Correct 6 ms 5248 KB Output is correct
36 Correct 5 ms 5248 KB Output is correct
37 Correct 5 ms 5248 KB Output is correct
38 Correct 5 ms 5280 KB Output is correct
39 Correct 5 ms 5248 KB Output is correct
40 Correct 6 ms 5248 KB Output is correct
41 Correct 6 ms 5248 KB Output is correct
42 Correct 5 ms 5248 KB Output is correct
43 Correct 6 ms 5248 KB Output is correct
44 Correct 5 ms 5248 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 5120 KB Output is correct
7 Correct 4 ms 5120 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 5 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 5120 KB Output is correct
13 Correct 4 ms 5120 KB Output is correct
14 Correct 5 ms 5120 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 4 ms 5120 KB Output is correct
19 Correct 4 ms 5120 KB Output is correct
20 Correct 4 ms 5120 KB Output is correct
21 Correct 5 ms 5248 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 5 ms 5248 KB Output is correct
24 Correct 5 ms 5248 KB Output is correct
25 Correct 7 ms 5248 KB Output is correct
26 Correct 5 ms 5248 KB Output is correct
27 Correct 6 ms 5248 KB Output is correct
28 Correct 5 ms 5248 KB Output is correct
29 Correct 6 ms 5248 KB Output is correct
30 Correct 6 ms 5248 KB Output is correct
31 Correct 5 ms 5248 KB Output is correct
32 Correct 6 ms 5248 KB Output is correct
33 Correct 6 ms 5248 KB Output is correct
34 Correct 6 ms 5248 KB Output is correct
35 Correct 6 ms 5248 KB Output is correct
36 Correct 5 ms 5248 KB Output is correct
37 Correct 5 ms 5248 KB Output is correct
38 Correct 5 ms 5280 KB Output is correct
39 Correct 5 ms 5248 KB Output is correct
40 Correct 6 ms 5248 KB Output is correct
41 Correct 6 ms 5248 KB Output is correct
42 Correct 5 ms 5248 KB Output is correct
43 Correct 6 ms 5248 KB Output is correct
44 Correct 5 ms 5248 KB Output is correct
45 Correct 289 ms 24056 KB Output is correct
46 Correct 283 ms 23800 KB Output is correct
47 Correct 292 ms 24184 KB Output is correct
48 Correct 285 ms 23672 KB Output is correct
49 Correct 279 ms 23928 KB Output is correct
50 Correct 283 ms 23672 KB Output is correct
51 Correct 300 ms 23800 KB Output is correct
52 Correct 293 ms 24312 KB Output is correct
53 Correct 288 ms 23800 KB Output is correct
54 Correct 428 ms 27200 KB Output is correct
55 Correct 408 ms 26080 KB Output is correct
56 Correct 391 ms 25072 KB Output is correct
57 Correct 379 ms 24876 KB Output is correct
58 Correct 271 ms 22776 KB Output is correct
59 Correct 273 ms 22904 KB Output is correct
60 Correct 228 ms 29776 KB Output is correct
61 Correct 273 ms 23672 KB Output is correct
62 Correct 473 ms 27960 KB Output is correct
63 Correct 266 ms 23672 KB Output is correct
64 Correct 284 ms 23416 KB Output is correct
65 Correct 468 ms 27624 KB Output is correct
66 Correct 267 ms 23928 KB Output is correct