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답안 #391518

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
391518 2021-04-19T06:42:37 Z patrikpavic2 Worst Reporter 4 (JOI21_worst_reporter4) C++17
100 / 100
 1139 ms 172096 KB 
#include <cstdio>
#include <algorithm>
#include <vector>

#define PB push_back

using namespace std;

const int N = 4e5 + 500;
const int OFF = (1 << 18);

typedef long long ll;

struct node{
	node *L, *R;
	ll sum;
	node(){
		sum = 0, L = NULL, R = NULL;
	}
};

typedef node* pnode;

ll get_sum(pnode x) { return x ? x -> sum : 0LL;} 
int bio[N];

void update(pnode &x, int a, int b, int gdj, ll dod){
	if(!x) x = new node();
	x -> sum += dod;
	if(a != b && gdj <= (a + b) / 2)
		update(x -> L, a, (a + b) / 2, gdj, dod);
	else if(a != b)
		update(x -> R, (a + b) / 2 + 1, b, gdj, dod);
}

ll query(pnode &x, int a, int b, int gdj){
	if(!x || a > gdj) return 0;
	if(gdj == b) return x -> sum;
	if(gdj <= (a + b) / 2)
		return query(x -> L, a, (a + b) / 2, gdj);
	else
		return get_sum(x -> L) + query(x -> R, (a + b) / 2 + 1, b, gdj);
}

void brisi(pnode &x, int a, int b, int lo, int hi){
	if(!x) return;
	if(a > hi || b < lo) return;
	brisi(x -> L, a, (a + b) / 2, lo, hi);
	brisi(x -> R, (a + b) / 2 + 1, b, lo, hi);
	if(lo <= a && b <= hi){
		delete x; x = NULL;
	}
	else{
		x -> sum = get_sum(x -> L) + get_sum(x -> R);
	}
}

ll OSTALO;

int bar(pnode &x, int a, int b, ll kol){
	if(!x || a == b) {
		OSTALO = kol;
		return b;
	}
	if(get_sum(x -> L) >= kol)
		return bar(x -> L, a, (a + b) / 2, kol);
	return bar(x -> R, (a + b) / 2 + 1, b, kol - get_sum(x -> L));
}

void prodi_sve(pnode &x, int a, int b, pnode novi){
	if(!x || (x -> sum == 0)) return;
	if(a == b){
		update(novi, 0, OFF - 1, a, x -> sum);
		return;
	}
	prodi_sve(x -> L, a, (a + b) / 2, novi);
	prodi_sve(x -> R, (a + b) / 2 + 1, b, novi);
	delete x; x = NULL;
}

pnode root[N];
int siz[N], C[N], A[N], P[N], boja[N];
vector < int > v[N], cik[N];

void print(pnode x, int a, int b, int mks){
	if(a > mks || !x) return;
	if(a == b)
		printf("(%d, %lld) ", a, x -> sum);
	else{
		print(x -> L, a, (a + b) / 2, mks);
		print(x -> R, (a + b) / 2 + 1, b, mks);
	}
}

int n;

void primjeni(pnode &x, int AA, int CC){
	ll ja = query(x, 0, OFF - 1, AA) + CC;
	int gr = bar(x, 0, OFF - 1, ja);
	if(gr != OFF - 1){
		update(x, 0, OFF - 1, gr, -OSTALO);
		brisi(x, 0, OFF - 1, AA + 1, gr - 1);
	}
	else{
		brisi(x, 0, OFF - 1, AA + 1, OFF - 1);
	}
	update(x, 0, OFF - 1, AA, CC);
}

bool cmp(int x, int y){
	return A[x] > A[y];
}

void dfs(int x){
	siz[x] = 0;
	for(int y : v[x]){
		dfs(y);
		if(siz[y] > siz[x]){
			swap(siz[x], siz[y]);
			swap(root[x], root[y]);
		}
		prodi_sve(root[y], 0, OFF - 1, root[x]);
		siz[x] += siz[y];
	}
	siz[x]++;
	if(x <= n){
		primjeni(root[x], A[x], C[x]);
	}
	else{
		sort(cik[x].begin(), cik[x].end(), cmp);
		for(int xx : cik[x]){
			primjeni(root[x], A[xx], C[xx]);
		}
	}
}

vector < int > saz;
vector < int > g[N];
ll sve = 0;
int novi = 0;

void biooo(int x){
	if(bio[x] == 2) return;
	bio[x] = 2;
	for(int y : g[x])
		biooo(y);
}

int main(){
	scanf("%d", &n); novi = n + 1;
	for(int i = 1;i <= n;i++){
		scanf("%d%d%d", P + i, A + i, C + i);
		saz.PB(-A[i]); 
		sve += C[i];
		g[P[i]].PB(i); 
		g[i].PB(P[i]);
	}
	sort(saz.begin(), saz.end());
	saz.erase(unique(saz.begin(), saz.end()), saz.end());
	for(int i = 1;i <= n;i++)
		A[i] = lower_bound(saz.begin(), saz.end(), -A[i]) - saz.begin() + 1;
	
	for(int i = 1;i <= n;i++){
		if(bio[i]) continue;
		int cur = i;
		while(!bio[cur]){
			bio[cur] = 1;
			cur = P[cur];
		}
		biooo(cur);
		int poc = cur, st = 1;
		while(cur != poc || st){
			boja[cur] = novi;
			cik[novi].PB(cur);
			cur = P[cur];
			st = 0;
		}
		novi++;
	}
	for(int i = 1;i <= n;i++){
		if(boja[i]) continue;
		if(boja[P[i]]) v[boja[P[i]]].PB(i);
		else 		   v[P[i]].PB(i);
	}
	for(int i = n + 1;i < novi;i++){
		dfs(i);
		sve -= query(root[i], 0, OFF - 1, OFF - 1);
	}	
	printf("%lld\n", sve);
	return 0;
}

Compilation message

worst_reporter2.cpp: In function 'int main()':
worst_reporter2.cpp:150:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  150 |  scanf("%d", &n); novi = n + 1;
      |  ~~~~~^~~~~~~~~~
worst_reporter2.cpp:152:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  152 |   scanf("%d%d%d", P + i, A + i, C + i);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 28492 KB Output is correct
2 Correct 17 ms 28476 KB Output is correct
3 Correct 20 ms 28508 KB Output is correct
4 Correct 18 ms 28508 KB Output is correct
5 Correct 30 ms 29712 KB Output is correct
6 Correct 31 ms 29240 KB Output is correct
7 Correct 24 ms 29132 KB Output is correct
8 Correct 35 ms 29712 KB Output is correct
9 Correct 32 ms 29320 KB Output is correct
10 Correct 25 ms 29252 KB Output is correct
11 Correct 26 ms 29040 KB Output is correct
12 Correct 26 ms 29464 KB Output is correct
13 Correct 23 ms 29432 KB Output is correct
14 Correct 26 ms 29388 KB Output is correct
15 Correct 25 ms 29260 KB Output is correct
16 Correct 32 ms 29980 KB Output is correct
17 Correct 26 ms 29424 KB Output is correct
18 Correct 21 ms 29132 KB Output is correct
19 Correct 25 ms 29548 KB Output is correct
20 Correct 24 ms 29284 KB Output is correct
21 Correct 23 ms 29324 KB Output is correct
22 Correct 29 ms 29456 KB Output is correct
23 Correct 24 ms 29156 KB Output is correct
24 Correct 27 ms 29536 KB Output is correct
25 Correct 24 ms 29360 KB Output is correct
26 Correct 25 ms 29788 KB Output is correct
27 Correct 37 ms 29540 KB Output is correct
28 Correct 26 ms 29536 KB Output is correct
29 Correct 28 ms 29640 KB Output is correct
30 Correct 26 ms 29636 KB Output is correct
31 Correct 25 ms 29716 KB Output is correct

Subtask #2
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 29676 KB Output is correct
2 Correct 960 ms 84432 KB Output is correct
3 Correct 556 ms 64412 KB Output is correct
4 Correct 964 ms 81816 KB Output is correct
5 Correct 538 ms 64380 KB Output is correct
6 Correct 359 ms 54848 KB Output is correct
7 Correct 369 ms 52396 KB Output is correct
8 Correct 429 ms 68316 KB Output is correct
9 Correct 312 ms 68160 KB Output is correct
10 Correct 219 ms 68116 KB Output is correct
11 Correct 454 ms 60880 KB Output is correct
12 Correct 326 ms 60216 KB Output is correct
13 Correct 1139 ms 98996 KB Output is correct
14 Correct 516 ms 72348 KB Output is correct
15 Correct 268 ms 52360 KB Output is correct
16 Correct 492 ms 69024 KB Output is correct
17 Correct 304 ms 60216 KB Output is correct
18 Correct 247 ms 60100 KB Output is correct
19 Correct 414 ms 65584 KB Output is correct
20 Correct 292 ms 53164 KB Output is correct
21 Correct 435 ms 70056 KB Output is correct
22 Correct 289 ms 61024 KB Output is correct
23 Correct 337 ms 80812 KB Output is correct
24 Correct 461 ms 70092 KB Output is correct
25 Correct 425 ms 74060 KB Output is correct
26 Correct 373 ms 76092 KB Output is correct
27 Correct 373 ms 75144 KB Output is correct
28 Correct 370 ms 75236 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 28492 KB Output is correct
2 Correct 17 ms 28476 KB Output is correct
3 Correct 20 ms 28508 KB Output is correct
4 Correct 18 ms 28508 KB Output is correct
5 Correct 30 ms 29712 KB Output is correct
6 Correct 31 ms 29240 KB Output is correct
7 Correct 24 ms 29132 KB Output is correct
8 Correct 35 ms 29712 KB Output is correct
9 Correct 32 ms 29320 KB Output is correct
10 Correct 25 ms 29252 KB Output is correct
11 Correct 26 ms 29040 KB Output is correct
12 Correct 26 ms 29464 KB Output is correct
13 Correct 23 ms 29432 KB Output is correct
14 Correct 26 ms 29388 KB Output is correct
15 Correct 25 ms 29260 KB Output is correct
16 Correct 32 ms 29980 KB Output is correct
17 Correct 26 ms 29424 KB Output is correct
18 Correct 21 ms 29132 KB Output is correct
19 Correct 25 ms 29548 KB Output is correct
20 Correct 24 ms 29284 KB Output is correct
21 Correct 23 ms 29324 KB Output is correct
22 Correct 29 ms 29456 KB Output is correct
23 Correct 24 ms 29156 KB Output is correct
24 Correct 27 ms 29536 KB Output is correct
25 Correct 24 ms 29360 KB Output is correct
26 Correct 25 ms 29788 KB Output is correct
27 Correct 37 ms 29540 KB Output is correct
28 Correct 26 ms 29536 KB Output is correct
29 Correct 28 ms 29640 KB Output is correct
30 Correct 26 ms 29636 KB Output is correct
31 Correct 25 ms 29716 KB Output is correct
32 Correct 31 ms 29676 KB Output is correct
33 Correct 960 ms 84432 KB Output is correct
34 Correct 556 ms 64412 KB Output is correct
35 Correct 964 ms 81816 KB Output is correct
36 Correct 538 ms 64380 KB Output is correct
37 Correct 359 ms 54848 KB Output is correct
38 Correct 369 ms 52396 KB Output is correct
39 Correct 429 ms 68316 KB Output is correct
40 Correct 312 ms 68160 KB Output is correct
41 Correct 219 ms 68116 KB Output is correct
42 Correct 454 ms 60880 KB Output is correct
43 Correct 326 ms 60216 KB Output is correct
44 Correct 1139 ms 98996 KB Output is correct
45 Correct 516 ms 72348 KB Output is correct
46 Correct 268 ms 52360 KB Output is correct
47 Correct 492 ms 69024 KB Output is correct
48 Correct 304 ms 60216 KB Output is correct
49 Correct 247 ms 60100 KB Output is correct
50 Correct 414 ms 65584 KB Output is correct
51 Correct 292 ms 53164 KB Output is correct
52 Correct 435 ms 70056 KB Output is correct
53 Correct 289 ms 61024 KB Output is correct
54 Correct 337 ms 80812 KB Output is correct
55 Correct 461 ms 70092 KB Output is correct
56 Correct 425 ms 74060 KB Output is correct
57 Correct 373 ms 76092 KB Output is correct
58 Correct 373 ms 75144 KB Output is correct
59 Correct 370 ms 75236 KB Output is correct
60 Correct 19 ms 28492 KB Output is correct
61 Correct 20 ms 28560 KB Output is correct
62 Correct 16 ms 28432 KB Output is correct
63 Correct 17 ms 28476 KB Output is correct
64 Correct 849 ms 79848 KB Output is correct
65 Correct 535 ms 61876 KB Output is correct
66 Correct 857 ms 79176 KB Output is correct
67 Correct 554 ms 61644 KB Output is correct
68 Correct 385 ms 55092 KB Output is correct
69 Correct 352 ms 53316 KB Output is correct
70 Correct 442 ms 50732 KB Output is correct
71 Correct 343 ms 48972 KB Output is correct
72 Correct 424 ms 52400 KB Output is correct
73 Correct 333 ms 52280 KB Output is correct
74 Correct 465 ms 63372 KB Output is correct
75 Correct 359 ms 53952 KB Output is correct
76 Correct 325 ms 54084 KB Output is correct
77 Correct 429 ms 63816 KB Output is correct
78 Correct 328 ms 54448 KB Output is correct
79 Correct 698 ms 72016 KB Output is correct
80 Correct 450 ms 60344 KB Output is correct
81 Correct 349 ms 54968 KB Output is correct
82 Correct 440 ms 64404 KB Output is correct
83 Correct 379 ms 172096 KB Output is correct
84 Correct 540 ms 68472 KB Output is correct
85 Correct 557 ms 67576 KB Output is correct
86 Correct 558 ms 67452 KB Output is correct
87 Correct 557 ms 67764 KB Output is correct
88 Correct 503 ms 67512 KB Output is correct