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Submission #677283

# Submission time Handle Problem Language Result Execution time Memory
677283 2023-01-02T17:48:58 Z dsyz Solar Storm (NOI20_solarstorm) C++17
100 / 100
 619 ms 221220 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define MAXN (1000005)
vector<ll> v[MAXN];
int parent[20][MAXN]; //(2^19 + 2^18 + 2^17 ... + 2^0) = (2^20 - 1) which is > 10^6
bool visited[MAXN];
void dfs(ll x){
	visited[x] = 1;
	for(auto u : v[x]){
		if(!visited[u]){
			parent[0][u] = x;
			visited[u] = 1;
			dfs(u);
		}
	}
}
ll fp(ll x,ll k){
	for(ll i = 19;i >= 0;i--){
		if(k >= (1<<i)){
			if(x == -1) return -1;
			x = parent[i][x];
			k -= (1<<i);
		}
	}
	return x;
}
int main() {
	ios_base::sync_with_stdio(false);cin.tie(0);
	ll N,S,K;
	cin>>N>>S>>K;
	ll d[N];
	ll arr[N];
	memset(d,0,sizeof(d));
	d[0] = 0;
	for(ll i = 1;i < N;i++){
		ll a;
		cin>>a;
		d[i] = d[i - 1] + a;
	}
	for(ll i = 0;i < N;i++){
		cin>>arr[i];
	}
	ll indeg[N];
	memset(indeg,0,sizeof(indeg));
	for(ll i = 0;i < N;i++){
		ll p = lower_bound(d,d + N,d[i] - K) - d - 1;
		if(p < 0 || p == i) continue;
		p = lower_bound(d,d + N,d[p] - K) - d;
		if(p < 0 || p == i) continue;
		v[p].push_back(i);
		indeg[i]++;
	}
	memset(visited,0,sizeof(visited));
	memset(parent,-1,sizeof(parent));
	for(ll i = 0;i < N;i++){
		if(indeg[i] == 0){
			visited[i] = 1;
			parent[0][i] = -1;
			dfs(i);
		}
	}
	for(ll k = 1;k < 20;k++){
		for(ll i = 0;i < N;i++){
			if(parent[k - 1][i] != -1){
				parent[k][i] = parent[k - 1][parent[k - 1][i]];
			}else{
				parent[k][i] = -1;
			}
		}
	}
	ll psum[N];
	ll cur = 0;
	for(ll i = 0;i < N;i++){
		cur += arr[i];
		psum[i] = cur;
	}
	ll ans = 0;
	pair<ll,ll> range = {-1,-1};
	for(ll r = 0;r < N;r++){
		ll l = fp(r,S - 1);
		if(l == -1) l = 0;
		ll s = lower_bound(d,d + N,d[l] - K) - d;
		ll e = upper_bound(d,d + N,d[r] + K) - d - 1;
		ll sum = psum[e];
		if(s >= 1) sum -= psum[s - 1];
		if(sum > ans){
			range = {s,e};
			ans = sum;
		}
	}
	vector<ll> modules;
	ll start = range.first;
	for(ll i = 0;i < S && start <= range.second;i++){
		ll modulepos = upper_bound(d,d + N,d[start] + K) - d - 1;
		modules.push_back(modulepos + 1);
		ll end = upper_bound(d,d + N,d[modulepos] + K) - d - 1;
		start = end + 1;
	}
	cout<<modules.size()<<'\n';
	for(auto u : modules){
		cout<<u<<" ";
	}
	cout<<'\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 102992 KB Output is correct
2 Correct 46 ms 103940 KB Output is correct
3 Correct 44 ms 104184 KB Output is correct
4 Correct 43 ms 103440 KB Output is correct
5 Correct 45 ms 102924 KB Output is correct
6 Correct 42 ms 103272 KB Output is correct
7 Correct 42 ms 103408 KB Output is correct
8 Correct 43 ms 103368 KB Output is correct
9 Correct 43 ms 103372 KB Output is correct
10 Correct 45 ms 103540 KB Output is correct
11 Correct 47 ms 103568 KB Output is correct
12 Correct 42 ms 103496 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 255 ms 131696 KB Output is correct
2 Correct 214 ms 126588 KB Output is correct
3 Correct 271 ms 135904 KB Output is correct
4 Correct 324 ms 143596 KB Output is correct
5 Correct 378 ms 150656 KB Output is correct
6 Correct 482 ms 166156 KB Output is correct
7 Correct 317 ms 150224 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 102992 KB Output is correct
2 Correct 46 ms 103940 KB Output is correct
3 Correct 44 ms 104184 KB Output is correct
4 Correct 43 ms 103440 KB Output is correct
5 Correct 45 ms 102924 KB Output is correct
6 Correct 42 ms 103272 KB Output is correct
7 Correct 42 ms 103408 KB Output is correct
8 Correct 43 ms 103368 KB Output is correct
9 Correct 43 ms 103372 KB Output is correct
10 Correct 45 ms 103540 KB Output is correct
11 Correct 47 ms 103568 KB Output is correct
12 Correct 42 ms 103496 KB Output is correct
13 Correct 255 ms 131696 KB Output is correct
14 Correct 214 ms 126588 KB Output is correct
15 Correct 271 ms 135904 KB Output is correct
16 Correct 324 ms 143596 KB Output is correct
17 Correct 378 ms 150656 KB Output is correct
18 Correct 482 ms 166156 KB Output is correct
19 Correct 317 ms 150224 KB Output is correct
20 Correct 208 ms 122176 KB Output is correct
21 Correct 345 ms 171596 KB Output is correct
22 Correct 407 ms 184356 KB Output is correct
23 Correct 271 ms 129436 KB Output is correct
24 Correct 245 ms 126964 KB Output is correct
25 Correct 359 ms 139072 KB Output is correct
26 Correct 254 ms 127036 KB Output is correct
27 Correct 353 ms 138316 KB Output is correct
28 Correct 374 ms 139360 KB Output is correct
29 Correct 479 ms 150148 KB Output is correct
30 Correct 370 ms 145356 KB Output is correct
31 Correct 333 ms 153696 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 457 ms 195004 KB Output is correct
2 Correct 263 ms 156616 KB Output is correct
3 Correct 265 ms 160076 KB Output is correct
4 Correct 367 ms 184880 KB Output is correct
5 Correct 368 ms 182532 KB Output is correct
6 Correct 381 ms 187124 KB Output is correct
7 Correct 535 ms 214448 KB Output is correct

Subtask #5
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 102992 KB Output is correct
2 Correct 46 ms 103940 KB Output is correct
3 Correct 44 ms 104184 KB Output is correct
4 Correct 43 ms 103440 KB Output is correct
5 Correct 45 ms 102924 KB Output is correct
6 Correct 42 ms 103272 KB Output is correct
7 Correct 42 ms 103408 KB Output is correct
8 Correct 43 ms 103368 KB Output is correct
9 Correct 43 ms 103372 KB Output is correct
10 Correct 45 ms 103540 KB Output is correct
11 Correct 47 ms 103568 KB Output is correct
12 Correct 42 ms 103496 KB Output is correct
13 Correct 42 ms 103500 KB Output is correct
14 Correct 46 ms 103476 KB Output is correct
15 Correct 45 ms 103500 KB Output is correct
16 Correct 43 ms 103420 KB Output is correct
17 Correct 46 ms 103744 KB Output is correct
18 Correct 47 ms 104068 KB Output is correct
19 Correct 45 ms 103892 KB Output is correct
20 Correct 45 ms 103812 KB Output is correct
21 Correct 48 ms 104356 KB Output is correct
22 Correct 52 ms 104140 KB Output is correct
23 Correct 51 ms 103576 KB Output is correct
24 Correct 59 ms 103524 KB Output is correct
25 Correct 53 ms 103756 KB Output is correct
26 Correct 53 ms 104044 KB Output is correct
27 Correct 51 ms 103864 KB Output is correct
28 Correct 50 ms 103864 KB Output is correct
29 Correct 50 ms 103912 KB Output is correct
30 Correct 58 ms 103396 KB Output is correct

Subtask #6
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 102992 KB Output is correct
2 Correct 46 ms 103940 KB Output is correct
3 Correct 44 ms 104184 KB Output is correct
4 Correct 43 ms 103440 KB Output is correct
5 Correct 45 ms 102924 KB Output is correct
6 Correct 42 ms 103272 KB Output is correct
7 Correct 42 ms 103408 KB Output is correct
8 Correct 43 ms 103368 KB Output is correct
9 Correct 43 ms 103372 KB Output is correct
10 Correct 45 ms 103540 KB Output is correct
11 Correct 47 ms 103568 KB Output is correct
12 Correct 42 ms 103496 KB Output is correct
13 Correct 255 ms 131696 KB Output is correct
14 Correct 214 ms 126588 KB Output is correct
15 Correct 271 ms 135904 KB Output is correct
16 Correct 324 ms 143596 KB Output is correct
17 Correct 378 ms 150656 KB Output is correct
18 Correct 482 ms 166156 KB Output is correct
19 Correct 317 ms 150224 KB Output is correct
20 Correct 208 ms 122176 KB Output is correct
21 Correct 345 ms 171596 KB Output is correct
22 Correct 407 ms 184356 KB Output is correct
23 Correct 271 ms 129436 KB Output is correct
24 Correct 245 ms 126964 KB Output is correct
25 Correct 359 ms 139072 KB Output is correct
26 Correct 254 ms 127036 KB Output is correct
27 Correct 353 ms 138316 KB Output is correct
28 Correct 374 ms 139360 KB Output is correct
29 Correct 479 ms 150148 KB Output is correct
30 Correct 370 ms 145356 KB Output is correct
31 Correct 333 ms 153696 KB Output is correct
32 Correct 279 ms 130724 KB Output is correct
33 Correct 305 ms 133024 KB Output is correct
34 Correct 463 ms 150348 KB Output is correct
35 Correct 293 ms 131532 KB Output is correct
36 Correct 314 ms 133616 KB Output is correct
37 Correct 354 ms 136720 KB Output is correct
38 Correct 485 ms 166388 KB Output is correct
39 Correct 392 ms 179404 KB Output is correct
40 Correct 507 ms 206768 KB Output is correct

Subtask #7
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 102992 KB Output is correct
2 Correct 46 ms 103940 KB Output is correct
3 Correct 44 ms 104184 KB Output is correct
4 Correct 43 ms 103440 KB Output is correct
5 Correct 45 ms 102924 KB Output is correct
6 Correct 42 ms 103272 KB Output is correct
7 Correct 42 ms 103408 KB Output is correct
8 Correct 43 ms 103368 KB Output is correct
9 Correct 43 ms 103372 KB Output is correct
10 Correct 45 ms 103540 KB Output is correct
11 Correct 47 ms 103568 KB Output is correct
12 Correct 42 ms 103496 KB Output is correct
13 Correct 255 ms 131696 KB Output is correct
14 Correct 214 ms 126588 KB Output is correct
15 Correct 271 ms 135904 KB Output is correct
16 Correct 324 ms 143596 KB Output is correct
17 Correct 378 ms 150656 KB Output is correct
18 Correct 482 ms 166156 KB Output is correct
19 Correct 317 ms 150224 KB Output is correct
20 Correct 208 ms 122176 KB Output is correct
21 Correct 345 ms 171596 KB Output is correct
22 Correct 407 ms 184356 KB Output is correct
23 Correct 271 ms 129436 KB Output is correct
24 Correct 245 ms 126964 KB Output is correct
25 Correct 359 ms 139072 KB Output is correct
26 Correct 254 ms 127036 KB Output is correct
27 Correct 353 ms 138316 KB Output is correct
28 Correct 374 ms 139360 KB Output is correct
29 Correct 479 ms 150148 KB Output is correct
30 Correct 370 ms 145356 KB Output is correct
31 Correct 333 ms 153696 KB Output is correct
32 Correct 457 ms 195004 KB Output is correct
33 Correct 263 ms 156616 KB Output is correct
34 Correct 265 ms 160076 KB Output is correct
35 Correct 367 ms 184880 KB Output is correct
36 Correct 368 ms 182532 KB Output is correct
37 Correct 381 ms 187124 KB Output is correct
38 Correct 535 ms 214448 KB Output is correct
39 Correct 42 ms 103500 KB Output is correct
40 Correct 46 ms 103476 KB Output is correct
41 Correct 45 ms 103500 KB Output is correct
42 Correct 43 ms 103420 KB Output is correct
43 Correct 46 ms 103744 KB Output is correct
44 Correct 47 ms 104068 KB Output is correct
45 Correct 45 ms 103892 KB Output is correct
46 Correct 45 ms 103812 KB Output is correct
47 Correct 48 ms 104356 KB Output is correct
48 Correct 52 ms 104140 KB Output is correct
49 Correct 51 ms 103576 KB Output is correct
50 Correct 59 ms 103524 KB Output is correct
51 Correct 53 ms 103756 KB Output is correct
52 Correct 53 ms 104044 KB Output is correct
53 Correct 51 ms 103864 KB Output is correct
54 Correct 50 ms 103864 KB Output is correct
55 Correct 50 ms 103912 KB Output is correct
56 Correct 58 ms 103396 KB Output is correct
57 Correct 279 ms 130724 KB Output is correct
58 Correct 305 ms 133024 KB Output is correct
59 Correct 463 ms 150348 KB Output is correct
60 Correct 293 ms 131532 KB Output is correct
61 Correct 314 ms 133616 KB Output is correct
62 Correct 354 ms 136720 KB Output is correct
63 Correct 485 ms 166388 KB Output is correct
64 Correct 392 ms 179404 KB Output is correct
65 Correct 507 ms 206768 KB Output is correct
66 Correct 207 ms 123224 KB Output is correct
67 Correct 480 ms 194508 KB Output is correct
68 Correct 365 ms 168464 KB Output is correct
69 Correct 420 ms 185936 KB Output is correct
70 Correct 203 ms 124028 KB Output is correct
71 Correct 488 ms 155468 KB Output is correct
72 Correct 330 ms 136524 KB Output is correct
73 Correct 423 ms 146636 KB Output is correct
74 Correct 270 ms 142208 KB Output is correct
75 Correct 440 ms 187664 KB Output is correct
76 Correct 312 ms 164060 KB Output is correct
77 Correct 371 ms 143372 KB Output is correct
78 Correct 295 ms 161116 KB Output is correct
79 Correct 374 ms 178300 KB Output is correct
80 Correct 452 ms 196944 KB Output is correct
81 Correct 204 ms 123100 KB Output is correct
82 Correct 339 ms 138536 KB Output is correct
83 Correct 276 ms 129732 KB Output is correct
84 Correct 303 ms 132164 KB Output is correct
85 Correct 280 ms 130360 KB Output is correct
86 Correct 470 ms 150812 KB Output is correct
87 Correct 277 ms 138772 KB Output is correct
88 Correct 443 ms 150728 KB Output is correct
89 Correct 379 ms 178248 KB Output is correct
90 Correct 350 ms 171244 KB Output is correct
91 Correct 619 ms 221220 KB Output is correct
92 Correct 509 ms 207352 KB Output is correct
93 Correct 567 ms 213716 KB Output is correct
94 Correct 581 ms 213428 KB Output is correct
95 Correct 438 ms 149196 KB Output is correct
96 Correct 354 ms 139464 KB Output is correct
97 Correct 466 ms 153432 KB Output is correct
98 Correct 336 ms 143284 KB Output is correct
99 Correct 430 ms 179620 KB Output is correct
100 Correct 417 ms 178712 KB Output is correct