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Submission #405760

# Submission time Handle Problem Language Result Execution time Memory
405760 2021-05-16T21:33:06 Z ritul_kr_singh Pinball (JOI14_pinball) C++17
100 / 100
 250 ms 22344 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define sp << ' ' <<
#define nl << '\n'

const int INF = 1e16;

struct SegmentTree{
	vector<int> a; int sz = 1;
	SegmentTree(int n){
		while(sz < n) sz += sz;
		a.assign(2*sz, INF);
	}
	void update(int i, int v, int x, int lx, int rx){
		if(rx-lx==1) return void(a[x] = min(a[x], v));
		int mx = (lx + rx) / 2;
		if(i < mx) update(i, v, 2*x+1, lx, mx);
		else update(i, v, 2*x+2, mx, rx);
		a[x] = min(a[2*x+1], a[2*x+2]);
	}
	void update(int i, int v){ update(i, v, 0, 0, sz); }
	int rangeMin(int l, int r, int x, int lx, int rx){
		if(r<=lx || rx<=l) return INF;
		if(l<=lx && rx<=r) return a[x];
		int mx = (lx + rx) / 2;
		return min(rangeMin(l, r, 2*x+1, lx, mx), rangeMin(l, r, 2*x+2, mx, rx));
	}
	int rangeMin(int l, int r){ return rangeMin(l, r+1, 0, 0, sz); }
};

void C(vector<int*> &vals){
	int curr = -1, prev = -INF;
	sort(vals.begin(), vals.end(), [](int* x, int* y){
		return *x < *y;
	});
	for(int i=0; i<(int)vals.size() ;++i){
		if(prev < *vals[i]) ++curr, prev = *vals[i];
		*vals[i] = curr;
	}
}

signed main(){
	cin.tie(0)->sync_with_stdio(0);
	int m, n; cin >> m >> n;
	array<int, 4> a[m];
	int lx = 1, last = n;
	vector<int*> vals;
	vals.push_back(&lx);
	vals.push_back(&last);
	for(auto &i : a){
		for(int j=0; j<3; ++j) cin >> i[j], vals.push_back(&i[j]);
		cin >> i[3];
	}

	C(vals);

	SegmentTree dpL(last+1), dpR(last+1);
	dpL.update(0, 0);
	dpR.update(last, 0);

	int res = INF;
	
	for(auto &i : a){
		int l = dpL.rangeMin(i[0], i[1]);
		int r = dpR.rangeMin(i[0], i[1]);
		res = min(res, l + r + i[3]);

		dpL.update(i[2], l + i[3]);
		dpR.update(i[2], r + i[3]);
	}

	cout << (res == INF ? -1 : res);
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 344 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 460 KB Output is correct
18 Correct 2 ms 332 KB Output is correct
19 Correct 2 ms 460 KB Output is correct
20 Correct 2 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 2 ms 460 KB Output is correct
23 Correct 2 ms 460 KB Output is correct
24 Correct 2 ms 460 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 460 KB Output is correct
18 Correct 2 ms 332 KB Output is correct
19 Correct 2 ms 460 KB Output is correct
20 Correct 2 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 2 ms 460 KB Output is correct
23 Correct 2 ms 460 KB Output is correct
24 Correct 2 ms 460 KB Output is correct
25 Correct 17 ms 2036 KB Output is correct
26 Correct 50 ms 3868 KB Output is correct
27 Correct 143 ms 8392 KB Output is correct
28 Correct 135 ms 7648 KB Output is correct
29 Correct 103 ms 7164 KB Output is correct
30 Correct 167 ms 7608 KB Output is correct
31 Correct 223 ms 14124 KB Output is correct
32 Correct 199 ms 9776 KB Output is correct
33 Correct 28 ms 3584 KB Output is correct
34 Correct 99 ms 11320 KB Output is correct
35 Correct 154 ms 22320 KB Output is correct
36 Correct 250 ms 22344 KB Output is correct
37 Correct 217 ms 22320 KB Output is correct
38 Correct 201 ms 22336 KB Output is correct