oj.uz

답안 #118250

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
118250 2019-06-18T12:50:40 Z onjo0127 Bitaro, who Leaps through Time (JOI19_timeleap) C++11
100 / 100
 1027 ms 82912 KB 
#include <bits/stdc++.h>
using namespace std;

const long long INF = 1LL * 1e18;

struct Node { long long ll, lr, rl, rr; };

Node comb(Node X, Node Y) {
	Node ret;
	ret.ll = max(X.ll + Y.rl, X.lr + Y.ll);
	ret.lr = max({X.ll + Y.rr, X.lr + Y.lr, 0LL});
	ret.rl = max({X.rl + Y.rl, X.rr + Y.ll, 0LL});
	ret.rr = max(X.rl + Y.rr, X.rr + Y.lr);
	return ret;
}

struct segtree {
	vector<Node> T;
	segtree(int sz) {
		T.resize(4*sz);
	}
	Node get(int idx, int s, int e, int l, int r) {
		if(r < s || e < l) return {-INF, 0, 0, -INF};
		if(l <= s && e <= r) return T[idx];
		int m = s+e >> 1;
		return comb(get(idx*2, s, m, l, r), get(idx*2+1, m+1, e, l, r));
	}
	void upd(int idx, int s, int e, int p, int S, int E) {
		if(p < s || e < p) return;
		if(s == e) {
			T[idx].ll = S;
			T[idx].rr = -E;
			T[idx].lr = T[idx].rl = 0;
			return;
		}
		int m = s+e >> 1;
		upd(idx*2, s, m, p, S, E);
		upd(idx*2+1, m+1, e, p, S, E);
		T[idx] = comb(T[idx*2], T[idx*2+1]);
	}
};

int L[300009], R[300009];

int main() {
	int N, Q; scanf("%d%d",&N,&Q);
	for(int i=1; i<N; i++) scanf("%d%d",&L[i],&R[i]);
	segtree AC(N), CA(N);
	for(int i=1; i<N; i++) AC.upd(1, 1, N-1, i, L[i] - i, R[i] - 1 - i);
	for(int i=1; i<N; i++) CA.upd(1, 1, N-1, i, L[N-i] - i, R[N-i] - 1 - i);

	while(Q--) {
		int ty; scanf("%d",&ty);
		if(ty == 1) {
			int P, S, E; scanf("%d%d%d",&P,&S,&E);
			AC.upd(1, 1, N-1, P, S - P, E - 1 - P);
			P = N - P;
			CA.upd(1, 1, N-1, P, S - P, E - 1 - P);
		}
		if(ty == 2) {
			int A, B, C, D; scanf("%d%d%d%d",&A,&B,&C,&D);
			if(A < C) {
				B -= A; D -= C;
				Node st = {B, 0, -INF, -B}, en = {D, 0, -INF, -D};
				printf("%lld\n", comb(comb(st, AC.get(1, 1, N-1, A, C-1)), en).lr);
			}
			if(C < A) {
				A = N - A + 1; C = N - C + 1;
				B -= A; D -= C;
				Node st = {B, 0, -INF, -B}, en = {D, 0, -INF, -D};
				printf("%lld\n", comb(comb(st, CA.get(1, 1, N-1, A, C-1)), en).lr);
			}
			if(A == C) printf("%lld\n", 1LL * max(B - D, 0));
		}
	}
	return 0;
}

Compilation message

timeleap.cpp: In member function 'Node segtree::get(int, int, int, int, int)':
timeleap.cpp:25:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int m = s+e >> 1;
           ~^~
timeleap.cpp: In member function 'void segtree::upd(int, int, int, int, int, int)':
timeleap.cpp:36:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int m = s+e >> 1;
           ~^~
timeleap.cpp: In function 'int main()':
timeleap.cpp:46:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int N, Q; scanf("%d%d",&N,&Q);
            ~~~~~^~~~~~~~~~~~~~
timeleap.cpp:47:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1; i<N; i++) scanf("%d%d",&L[i],&R[i]);
                         ~~~~~^~~~~~~~~~~~~~~~~~~~
timeleap.cpp:53:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int ty; scanf("%d",&ty);
           ~~~~~^~~~~~~~~~
timeleap.cpp:55:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    int P, S, E; scanf("%d%d%d",&P,&S,&E);
                 ~~~~~^~~~~~~~~~~~~~~~~~~
timeleap.cpp:61:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    int A, B, C, D; scanf("%d%d%d%d",&A,&B,&C,&D);
                    ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 4 ms 640 KB Output is correct
12 Correct 3 ms 640 KB Output is correct
13 Correct 4 ms 640 KB Output is correct
14 Correct 3 ms 640 KB Output is correct
15 Correct 4 ms 640 KB Output is correct
16 Correct 4 ms 640 KB Output is correct
17 Correct 4 ms 640 KB Output is correct
18 Correct 4 ms 640 KB Output is correct
19 Correct 4 ms 640 KB Output is correct
20 Correct 4 ms 640 KB Output is correct
21 Correct 4 ms 640 KB Output is correct
22 Correct 4 ms 640 KB Output is correct
23 Correct 4 ms 640 KB Output is correct
24 Correct 4 ms 640 KB Output is correct
25 Correct 4 ms 640 KB Output is correct
26 Correct 4 ms 512 KB Output is correct
27 Correct 3 ms 640 KB Output is correct
28 Correct 4 ms 640 KB Output is correct
29 Correct 4 ms 640 KB Output is correct
30 Correct 4 ms 640 KB Output is correct
31 Correct 4 ms 684 KB Output is correct
32 Correct 4 ms 640 KB Output is correct
33 Correct 4 ms 640 KB Output is correct
34 Correct 3 ms 640 KB Output is correct
35 Correct 4 ms 640 KB Output is correct
36 Correct 4 ms 640 KB Output is correct
37 Correct 4 ms 640 KB Output is correct
38 Correct 3 ms 640 KB Output is correct
39 Correct 3 ms 640 KB Output is correct
40 Correct 4 ms 640 KB Output is correct
41 Correct 2 ms 384 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 936 ms 78748 KB Output is correct
2 Correct 923 ms 72256 KB Output is correct
3 Correct 927 ms 73208 KB Output is correct
4 Correct 914 ms 70868 KB Output is correct
5 Correct 931 ms 76280 KB Output is correct
6 Correct 909 ms 74872 KB Output is correct
7 Correct 917 ms 77432 KB Output is correct
8 Correct 941 ms 80396 KB Output is correct
9 Correct 884 ms 71380 KB Output is correct
10 Correct 964 ms 76952 KB Output is correct
11 Correct 941 ms 76160 KB Output is correct
12 Correct 963 ms 81656 KB Output is correct
13 Correct 986 ms 82912 KB Output is correct
14 Correct 2 ms 256 KB Output is correct

Subtask #3
66.0 / 66.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 4 ms 640 KB Output is correct
12 Correct 3 ms 640 KB Output is correct
13 Correct 4 ms 640 KB Output is correct
14 Correct 3 ms 640 KB Output is correct
15 Correct 4 ms 640 KB Output is correct
16 Correct 4 ms 640 KB Output is correct
17 Correct 4 ms 640 KB Output is correct
18 Correct 4 ms 640 KB Output is correct
19 Correct 4 ms 640 KB Output is correct
20 Correct 4 ms 640 KB Output is correct
21 Correct 4 ms 640 KB Output is correct
22 Correct 4 ms 640 KB Output is correct
23 Correct 4 ms 640 KB Output is correct
24 Correct 4 ms 640 KB Output is correct
25 Correct 4 ms 640 KB Output is correct
26 Correct 4 ms 512 KB Output is correct
27 Correct 3 ms 640 KB Output is correct
28 Correct 4 ms 640 KB Output is correct
29 Correct 4 ms 640 KB Output is correct
30 Correct 4 ms 640 KB Output is correct
31 Correct 4 ms 684 KB Output is correct
32 Correct 4 ms 640 KB Output is correct
33 Correct 4 ms 640 KB Output is correct
34 Correct 3 ms 640 KB Output is correct
35 Correct 4 ms 640 KB Output is correct
36 Correct 4 ms 640 KB Output is correct
37 Correct 4 ms 640 KB Output is correct
38 Correct 3 ms 640 KB Output is correct
39 Correct 3 ms 640 KB Output is correct
40 Correct 4 ms 640 KB Output is correct
41 Correct 2 ms 384 KB Output is correct
42 Correct 936 ms 78748 KB Output is correct
43 Correct 923 ms 72256 KB Output is correct
44 Correct 927 ms 73208 KB Output is correct
45 Correct 914 ms 70868 KB Output is correct
46 Correct 931 ms 76280 KB Output is correct
47 Correct 909 ms 74872 KB Output is correct
48 Correct 917 ms 77432 KB Output is correct
49 Correct 941 ms 80396 KB Output is correct
50 Correct 884 ms 71380 KB Output is correct
51 Correct 964 ms 76952 KB Output is correct
52 Correct 941 ms 76160 KB Output is correct
53 Correct 963 ms 81656 KB Output is correct
54 Correct 986 ms 82912 KB Output is correct
55 Correct 2 ms 256 KB Output is correct
56 Correct 954 ms 73252 KB Output is correct
57 Correct 951 ms 68316 KB Output is correct
58 Correct 1027 ms 75376 KB Output is correct
59 Correct 1010 ms 75980 KB Output is correct
60 Correct 978 ms 70444 KB Output is correct
61 Correct 1002 ms 78248 KB Output is correct
62 Correct 983 ms 77944 KB Output is correct
63 Correct 979 ms 77724 KB Output is correct
64 Correct 979 ms 78456 KB Output is correct
65 Correct 973 ms 74192 KB Output is correct
66 Correct 957 ms 74976 KB Output is correct
67 Correct 977 ms 77944 KB Output is correct
68 Correct 968 ms 71684 KB Output is correct
69 Correct 1027 ms 80632 KB Output is correct
70 Correct 928 ms 71032 KB Output is correct
71 Correct 924 ms 68400 KB Output is correct
72 Correct 922 ms 71180 KB Output is correct
73 Correct 974 ms 78840 KB Output is correct
74 Correct 1008 ms 79028 KB Output is correct
75 Correct 1006 ms 80504 KB Output is correct
76 Correct 996 ms 80476 KB Output is correct
77 Correct 2 ms 384 KB Output is correct