oj.uz

Submission #26187

# Submission time Handle Problem Language Result Execution time Memory
26187 2017-06-28T08:55:59 Z khsoo01 Abduction 2 (JOI17_abduction2) C++11
100 / 100
 3393 ms 47504 KB 
#include<bits/stdc++.h>
#define X first
#define Y second
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef tuple<ll,ll,ll> tp;
const ll N = 100005, L = 17, inf = 1e18;

ll h, w, q, a[N], inv[N], prv[L][N], nxt[L][N], vis[N];

priority_queue<tp> pq[N];
vector<pll> ord, st;

ll getprv (ll P, ll V) {
	if(a[P] > V) {
		for(ll i=P-1;i>=1;i--) {
			if(a[i] > V) return i;
		}
		return 0;
	}
	ll I = P;
	for(ll i=L;i--;) {
		if(a[prv[i][I]] <= V) I = prv[i][I];
	}
	return prv[0][I];
}

ll getnxt (ll P, ll V) {
	if(a[P] > V) {
		for(ll i=P+1;i<=h+w;i++) {
			if(a[i] > V) return i;
		}
		return 0;
	}
	ll I = P;
	for(ll i=L;i--;) {
		if(a[nxt[i][I]] <= V) I = nxt[i][I];
	}
	return nxt[0][I];
}

void solve () {
	ll P, Q, R = 0;
	scanf("%lld%lld",&P,&Q);
	Q += h;
	pq[inv[P]].push(tp(0, P, Q));
	pq[inv[Q]].push(tp(0, Q, P));
	for(ll i=1;i<=h+w;i++) vis[i] = 0;
	for(ll i=1;i<=h+w;i++) while(!pq[i].empty()) {
		ll A, B, C; tie(A, B, C) = pq[i].top(); pq[i].pop();
		if(vis[C] == i) continue;
		vis[C] = i;
		ll X = getprv(C, a[B]), Y = getnxt(C, a[B]);
		if(X && (X<=h)==(C<=h)) pq[inv[X]].push(tp(A+C-X, X, B));
		else R = max(R, A + C - (C<=h?1:h+1));
		if(Y && (Y<=h)==(C<=h)) pq[inv[Y]].push(tp(A+Y-C, Y, B));
		else R = max(R, A + (C<=h?h:h+w) - C);
	}
	printf("%lld\n",R);
}

int main()
{
	scanf("%lld%lld%lld",&h,&w,&q);
	ord.push_back({0, 0});
	for(ll i=1;i<=h+w;i++) {
		scanf("%lld",&a[i]);
		ord.push_back({a[i], i});
	}
	sort(ord.begin(), ord.end());
	for(ll i=1;i<=h+w;i++) {
		inv[ord[i].Y] = i;
	}
	st.push_back({inf, 0});
	for(ll i=1;i<=h+w;i++) {
		while(st.back().X <= a[i]) st.pop_back();
		prv[0][i] = st.back().Y;
		st.push_back({a[i], i});
	}
	st.clear();
	st.push_back({inf, 0});
	for(ll i=h+w;i>=1;i--) {
		while(st.back().X <= a[i]) st.pop_back();
		nxt[0][i] = st.back().Y;
		st.push_back({a[i], i});
	}
	a[0] = inf;
	for(ll k=1;k<L;k++) for(ll i=1;i<=h+w;i++) {
		nxt[k][i] = nxt[k-1][nxt[k-1][i]];
		prv[k][i] = prv[k-1][prv[k-1][i]];
	}
	while(q--) solve();
}

Compilation message

abduction2.cpp: In function 'void solve()':
abduction2.cpp:45:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld",&P,&Q);
                         ^
abduction2.cpp: In function 'int main()':
abduction2.cpp:65:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld%lld",&h,&w,&q);
                                ^
abduction2.cpp:68:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld",&a[i]);
                      ^

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 34056 KB Output is correct
2 Correct 0 ms 34056 KB Output is correct
3 Correct 0 ms 34056 KB Output is correct
4 Correct 0 ms 34056 KB Output is correct
5 Correct 0 ms 34056 KB Output is correct
6 Correct 0 ms 34056 KB Output is correct
7 Correct 0 ms 34056 KB Output is correct
8 Correct 3 ms 34056 KB Output is correct
9 Correct 0 ms 34056 KB Output is correct
10 Correct 0 ms 34056 KB Output is correct
11 Correct 0 ms 34056 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 34056 KB Output is correct
2 Correct 0 ms 34056 KB Output is correct
3 Correct 0 ms 34056 KB Output is correct
4 Correct 0 ms 34056 KB Output is correct
5 Correct 0 ms 34056 KB Output is correct
6 Correct 0 ms 34056 KB Output is correct
7 Correct 0 ms 34056 KB Output is correct
8 Correct 3 ms 34056 KB Output is correct
9 Correct 0 ms 34056 KB Output is correct
10 Correct 0 ms 34056 KB Output is correct
11 Correct 0 ms 34056 KB Output is correct
12 Correct 3 ms 34196 KB Output is correct
13 Correct 0 ms 34196 KB Output is correct
14 Correct 3 ms 34196 KB Output is correct
15 Correct 3 ms 34196 KB Output is correct
16 Correct 3 ms 34196 KB Output is correct
17 Correct 0 ms 34196 KB Output is correct
18 Correct 3 ms 34196 KB Output is correct
19 Correct 0 ms 34328 KB Output is correct
20 Correct 6 ms 34460 KB Output is correct
21 Correct 3 ms 34328 KB Output is correct
22 Correct 3 ms 34460 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 34056 KB Output is correct
2 Correct 0 ms 34056 KB Output is correct
3 Correct 0 ms 34056 KB Output is correct
4 Correct 0 ms 34056 KB Output is correct
5 Correct 0 ms 34056 KB Output is correct
6 Correct 0 ms 34056 KB Output is correct
7 Correct 0 ms 34056 KB Output is correct
8 Correct 3 ms 34056 KB Output is correct
9 Correct 0 ms 34056 KB Output is correct
10 Correct 0 ms 34056 KB Output is correct
11 Correct 0 ms 34056 KB Output is correct
12 Correct 3 ms 34196 KB Output is correct
13 Correct 0 ms 34196 KB Output is correct
14 Correct 3 ms 34196 KB Output is correct
15 Correct 3 ms 34196 KB Output is correct
16 Correct 3 ms 34196 KB Output is correct
17 Correct 0 ms 34196 KB Output is correct
18 Correct 3 ms 34196 KB Output is correct
19 Correct 0 ms 34328 KB Output is correct
20 Correct 6 ms 34460 KB Output is correct
21 Correct 3 ms 34328 KB Output is correct
22 Correct 3 ms 34460 KB Output is correct
23 Correct 33 ms 37212 KB Output is correct
24 Correct 39 ms 37212 KB Output is correct
25 Correct 36 ms 37212 KB Output is correct
26 Correct 39 ms 37212 KB Output is correct
27 Correct 33 ms 37212 KB Output is correct
28 Correct 76 ms 38232 KB Output is correct
29 Correct 39 ms 38232 KB Output is correct
30 Correct 99 ms 41564 KB Output is correct
31 Correct 106 ms 43016 KB Output is correct
32 Correct 39 ms 37212 KB Output is correct
33 Correct 43 ms 37868 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 34196 KB Output is correct
2 Correct 3 ms 34196 KB Output is correct
3 Correct 3 ms 34196 KB Output is correct
4 Correct 6 ms 34196 KB Output is correct
5 Correct 3 ms 34196 KB Output is correct
6 Correct 33 ms 34196 KB Output is correct
7 Correct 29 ms 34196 KB Output is correct
8 Correct 66 ms 34592 KB Output is correct
9 Correct 76 ms 34592 KB Output is correct
10 Correct 76 ms 34592 KB Output is correct
11 Correct 103 ms 34592 KB Output is correct

Subtask #5
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 34056 KB Output is correct
2 Correct 0 ms 34056 KB Output is correct
3 Correct 0 ms 34056 KB Output is correct
4 Correct 0 ms 34056 KB Output is correct
5 Correct 0 ms 34056 KB Output is correct
6 Correct 0 ms 34056 KB Output is correct
7 Correct 0 ms 34056 KB Output is correct
8 Correct 3 ms 34056 KB Output is correct
9 Correct 0 ms 34056 KB Output is correct
10 Correct 0 ms 34056 KB Output is correct
11 Correct 0 ms 34056 KB Output is correct
12 Correct 3 ms 34196 KB Output is correct
13 Correct 0 ms 34196 KB Output is correct
14 Correct 3 ms 34196 KB Output is correct
15 Correct 3 ms 34196 KB Output is correct
16 Correct 3 ms 34196 KB Output is correct
17 Correct 0 ms 34196 KB Output is correct
18 Correct 3 ms 34196 KB Output is correct
19 Correct 0 ms 34328 KB Output is correct
20 Correct 6 ms 34460 KB Output is correct
21 Correct 3 ms 34328 KB Output is correct
22 Correct 3 ms 34460 KB Output is correct
23 Correct 33 ms 37212 KB Output is correct
24 Correct 39 ms 37212 KB Output is correct
25 Correct 36 ms 37212 KB Output is correct
26 Correct 39 ms 37212 KB Output is correct
27 Correct 33 ms 37212 KB Output is correct
28 Correct 76 ms 38232 KB Output is correct
29 Correct 39 ms 38232 KB Output is correct
30 Correct 99 ms 41564 KB Output is correct
31 Correct 106 ms 43016 KB Output is correct
32 Correct 39 ms 37212 KB Output is correct
33 Correct 43 ms 37868 KB Output is correct
34 Correct 6 ms 34196 KB Output is correct
35 Correct 3 ms 34196 KB Output is correct
36 Correct 3 ms 34196 KB Output is correct
37 Correct 6 ms 34196 KB Output is correct
38 Correct 3 ms 34196 KB Output is correct
39 Correct 33 ms 34196 KB Output is correct
40 Correct 29 ms 34196 KB Output is correct
41 Correct 66 ms 34592 KB Output is correct
42 Correct 76 ms 34592 KB Output is correct
43 Correct 76 ms 34592 KB Output is correct
44 Correct 103 ms 34592 KB Output is correct
45 Correct 76 ms 37212 KB Output is correct
46 Correct 66 ms 37212 KB Output is correct
47 Correct 69 ms 37212 KB Output is correct
48 Correct 69 ms 37212 KB Output is correct
49 Correct 63 ms 37212 KB Output is correct
50 Correct 1806 ms 38496 KB Output is correct
51 Correct 1583 ms 38628 KB Output is correct
52 Correct 3066 ms 46184 KB Output is correct
53 Correct 2799 ms 45920 KB Output is correct
54 Correct 2909 ms 45260 KB Output is correct
55 Correct 3393 ms 47504 KB Output is correct
56 Correct 1186 ms 47140 KB Output is correct
57 Correct 446 ms 43972 KB Output is correct
58 Correct 333 ms 43840 KB Output is correct
59 Correct 493 ms 44500 KB Output is correct