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답안 #738972

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
738972 2023-05-09T17:52:25 Z shoryu386 벽 (IOI14_wall) C++17
100 / 100
 1861 ms 175924 KB 
#include <bits/stdc++.h>
#include "wall.h"
using namespace std;
using ll = int;
#define llINF (INT_MAX/10)
const int MAXN = 2000007;  // 1-based

int N;
ll A[MAXN];

struct Node {
	ll sum;  // Sum tag
	ll max1;  // Max value
	ll max2;  // Second Max value
	ll maxc;  // Max value count
	ll min1;  // Min value
	ll min2;  // Second Min value
	ll minc;  // Min value count
	ll lazy;  // Lazy tag
} T[MAXN * 4];

void merge(int t) {
	// sum
	T[t].sum = T[t << 1].sum + T[t << 1 | 1].sum;

	// max
	if (T[t << 1].max1 == T[t << 1 | 1].max1) {
		T[t].max1 = T[t << 1].max1;
		T[t].max2 = max(T[t << 1].max2, T[t << 1 | 1].max2);
		T[t].maxc = T[t << 1].maxc + T[t << 1 | 1].maxc;
	} else {
		if (T[t << 1].max1 > T[t << 1 | 1].max1) {
			T[t].max1 = T[t << 1].max1;
			T[t].max2 = max(T[t << 1].max2, T[t << 1 | 1].max1);
			T[t].maxc = T[t << 1].maxc;
		} else {
			T[t].max1 = T[t << 1 | 1].max1;
			T[t].max2 = max(T[t << 1].max1, T[t << 1 | 1].max2);
			T[t].maxc = T[t << 1 | 1].maxc;
		}
	}

	// min
	if (T[t << 1].min1 == T[t << 1 | 1].min1) {
		T[t].min1 = T[t << 1].min1;
		T[t].min2 = min(T[t << 1].min2, T[t << 1 | 1].min2);
		T[t].minc = T[t << 1].minc + T[t << 1 | 1].minc;
	} else {
		if (T[t << 1].min1 < T[t << 1 | 1].min1) {
			T[t].min1 = T[t << 1].min1;
			T[t].min2 = min(T[t << 1].min2, T[t << 1 | 1].min1);
			T[t].minc = T[t << 1].minc;
		} else {
			T[t].min1 = T[t << 1 | 1].min1;
			T[t].min2 = min(T[t << 1].min1, T[t << 1 | 1].min2);
			T[t].minc = T[t << 1 | 1].minc;
		}
	}
}

void push_add(int t, int tl, int tr, ll v) {
	if (v == 0) {
		return;
	}
	T[t].sum += (tr - tl + 1) *v;
	T[t].max1 += v;
	if (T[t].max2 != -llINF) {
		T[t].max2 += v;
	}
	T[t].min1 += v;
	if (T[t].min2 != llINF) {
		T[t].min2 += v;
	}
	T[t].lazy += v;
}

// corresponds to a chmin update
void push_max(int t, ll v, bool l) {
	if (v >= T[t].max1) {
		return;
	}
	T[t].sum -= T[t].max1 * T[t].maxc;
	T[t].max1 = v;
	T[t].sum += T[t].max1 * T[t].maxc;
	if (l) {
		T[t].min1 = T[t].max1;
	} else {
		if (v <= T[t].min1) {
			T[t].min1 = v;
		} else if (v < T[t].min2) {
			T[t].min2 = v;
		}
	}
}

// corresponds to a chmax update
void push_min(int t, ll v, bool l) {
	if (v <= T[t].min1) {
		return;
	}
	T[t].sum -= T[t].min1 * T[t].minc;
	T[t].min1 = v;
	T[t].sum += T[t].min1 * T[t].minc;
	if (l) {
		T[t].max1 = T[t].min1;
	} else {
		if (v >= T[t].max1) {
			T[t].max1 = v;
		} else if (v > T[t].max2) {
			T[t].max2 = v;
		}
	}
}

void pushdown(int t, int tl, int tr) {
	if (tl == tr)
		return;
	// sum
	int tm = (tl + tr) >> 1;
	push_add(t << 1, tl, tm, T[t].lazy);
	push_add(t << 1 | 1, tm + 1, tr, T[t].lazy);
	T[t].lazy = 0;

	// max
	push_max(t << 1, T[t].max1, tl == tm);
	push_max(t << 1 | 1, T[t].max1, tm + 1 == tr);

	// min
	push_min(t << 1, T[t].min1, tl == tm);
	push_min(t << 1 | 1, T[t].min1, tm + 1 == tr);
}

void build(int t=1, int tl=0, int tr=N-1) {
	T[t].lazy = 0;
	if (tl == tr) {
		T[t].sum = T[t].max1 = T[t].min1 = A[tl];
		T[t].maxc = T[t].minc = 1;
		T[t].max2 = -llINF;
		T[t].min2 = llINF;
		return;
	}

	int tm = (tl + tr) >> 1;
	build(t << 1, tl, tm);
	build(t << 1 | 1, tm + 1, tr);
	merge(t);
}

void update_add(int l, int r, ll v, int t=1, int tl=0, int tr=N-1) {
	if (r < tl || tr < l) {
		return;
	}
	if (l <= tl && tr <= r) {
		push_add(t, tl, tr, v);
		return;
	}
	pushdown(t, tl, tr);

	int tm = (tl + tr) >> 1;
	update_add(l, r, v, t << 1, tl, tm);
	update_add(l, r, v, t << 1 | 1, tm + 1, tr);
	merge(t);
}

void update_chmin(int l, int r, ll v, int t=1, int tl=0, int tr=N-1) {
	if (r < tl || tr < l || v >= T[t].max1) {
		return;
	}
	if (l <= tl && tr <= r && v > T[t].max2) {
		push_max(t, v, tl == tr);
		return;
	}
	pushdown(t, tl, tr);

	int tm = (tl + tr) >> 1;
	update_chmin(l, r, v, t << 1, tl, tm);
	update_chmin(l, r, v, t << 1 | 1, tm + 1, tr);
	merge(t);
}

void update_chmax(int l, int r, ll v, int t=1, int tl=0, int tr=N-1) {
	if (r < tl || tr < l || v <= T[t].min1) {
		return;
	}
	if (l <= tl && tr <= r && v < T[t].min2) {
		push_min(t, v, tl == tr);
		return;
	}
	pushdown(t, tl, tr);

	int tm = (tl + tr) >> 1;
	update_chmax(l, r, v, t << 1, tl, tm);
	update_chmax(l, r, v, t << 1 | 1, tm + 1, tr);
	merge(t);
}

ll query_sum(int l, int r, int t=1, int tl=0, int tr=N-1) {
	if (r < tl || tr < l) {
		return 0;
	}
	if (l <= tl && tr <= r) {
		return T[t].sum;
	}
	pushdown(t, tl, tr);

	int tm = (tl + tr) >> 1;
	return query_sum(l, r, t << 1, tl, tm) + query_sum(l, r, t << 1 | 1, tm + 1, tr);
}



void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
	for (int x = 0; x < n; x++) A[x] = 0;
	N = n;
	
	build();
	
	for (int x = 0; x < k; x++){
		if (op[x] == 1) update_chmax(left[x], right[x], height[x]);
		else update_chmin(left[x], right[x], height[x]);
	}
	
	for (int x = 0; x < n; x++) finalHeight[x] = query_sum(x, x);
}


/*
int main() {
	int Q;

	cin >> N >> Q;
	for (int i = 0; i < N; i++) {
		cin >> A[i];
	}
	build();
	for (int q = 0; q < Q; q++) {
		int t; cin >> t;
		if (t == 0) {
			int l, r;
			ll x;
			cin >> l >> r >> x;
			update_chmin(l, r, x);
		} else if (t == 1) {
			int l, r;
			ll x;
			cin >> l >> r >> x;
			update_chmax(l, r, x);
		} else if (t == 2) {
			int l, r;
			ll x;
			cin >> l >> r >> x;
			update_add(l, r, x);
		} else if (t == 3) {
			int l, r;
			cin >> l >> r;
			cout << query_sum(l, r) << '\n';
		}
	}
}
*/

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 10 ms 1504 KB Output is correct
5 Correct 8 ms 1492 KB Output is correct
6 Correct 8 ms 1500 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 119 ms 8072 KB Output is correct
3 Correct 74 ms 5768 KB Output is correct
4 Correct 213 ms 17304 KB Output is correct
5 Correct 201 ms 17792 KB Output is correct
6 Correct 272 ms 17776 KB Output is correct

Subtask #3
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 9 ms 1492 KB Output is correct
5 Correct 8 ms 1500 KB Output is correct
6 Correct 8 ms 1504 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 122 ms 8148 KB Output is correct
9 Correct 74 ms 5752 KB Output is correct
10 Correct 187 ms 17304 KB Output is correct
11 Correct 200 ms 17780 KB Output is correct
12 Correct 238 ms 17848 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 128 ms 8048 KB Output is correct
15 Correct 41 ms 3052 KB Output is correct
16 Correct 735 ms 17628 KB Output is correct
17 Correct 392 ms 17484 KB Output is correct
18 Correct 408 ms 17520 KB Output is correct

Subtask #4
39.0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 9 ms 1492 KB Output is correct
5 Correct 8 ms 1500 KB Output is correct
6 Correct 8 ms 1492 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 122 ms 8088 KB Output is correct
9 Correct 76 ms 5756 KB Output is correct
10 Correct 186 ms 17228 KB Output is correct
11 Correct 192 ms 17736 KB Output is correct
12 Correct 252 ms 17868 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 124 ms 8136 KB Output is correct
15 Correct 44 ms 3060 KB Output is correct
16 Correct 765 ms 17632 KB Output is correct
17 Correct 417 ms 17536 KB Output is correct
18 Correct 403 ms 17568 KB Output is correct
19 Correct 1549 ms 165356 KB Output is correct
20 Correct 1683 ms 173340 KB Output is correct
21 Correct 1554 ms 175776 KB Output is correct
22 Correct 1569 ms 173520 KB Output is correct
23 Correct 1558 ms 173456 KB Output is correct
24 Correct 1580 ms 173456 KB Output is correct
25 Correct 1553 ms 173268 KB Output is correct
26 Correct 1582 ms 175924 KB Output is correct
27 Correct 1581 ms 175832 KB Output is correct
28 Correct 1594 ms 173224 KB Output is correct
29 Correct 1743 ms 173328 KB Output is correct
30 Correct 1861 ms 173328 KB Output is correct