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Submission #283617

# Submission time Handle Problem Language Result Execution time Memory
283617 2020-08-26T03:23:43 Z sjimed Iqea (innopolis2018_final_C) C++14
36 / 100
 2000 ms 97188 KB 
#include<bits/stdc++.h>
#include <unordered_map>
using namespace std;

#define fast ios::sync_with_stdio(false); cin.tie(0);
#define fi first
#define se second
#define em emplace
#define eb emplace_back
#define mp make_pair
#define all(v) (v).begin(), (v).end()

typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const int inf = 1e9;
const ll INF = 1e18;

int n;
unordered_map<int, int> ans;

struct T{
	int n;
	vector<int> g[100010];
	map<pii, int> m;
	int p[100010];
	int par[100010];
	int sum[100010];
	int d[100010];
	int sp[100010][21];
	bool chk[100010];
	int dis[100010][21];

	int Find(int a) { return p[a] = p[a] == a ? a : Find(p[a]); }
	void Union(int a, int b) { if(Find(a) != Find(b)) p[Find(b)] = Find(a); }

	void dfs(int x) {
		for(int i=1; i<=20; i++) sp[x][i] = sp[sp[x][i-1]][i-1];

		sum[x] = 1;

		for(auto i : g[x]) {
			if(i == sp[x][0]) continue;

			sp[i][0] = x;
			d[i] = d[x] + 1;
			dfs(i);

			sum[x] += sum[i];
		}
	}

	int lca(int a, int b) {
		if(d[a] > d[b]) swap(a, b);

		for(int i=20; i>=0; i--) if(d[b] - d[a] >= (1 << i)) b = sp[b][i];
		if(a == b) return a;

		for(int i=20; i>=0; i--) if(sp[a][i] != sp[b][i]) a = sp[a][i], b = sp[b][i];
		return sp[a][0];
	}

	int dist(int a, int b) { return d[a] + d[b] - 2 * d[lca(a, b)]; }

	int Cen(int x) {
		int s = 1, mx = -1, mxi;

		for(auto i : g[x]) {
			if(chk[i]) continue;

			s += sum[i];

			if(sum[i] > mx) {
				mx = sum[i];
				mxi = i;
			}
		}

		if(mx > s/2) {
			sum[x] = s - mx;
			return Cen(mxi);
		}

		return x;
	}

	void makeCen(int x, int p) {
		int c = Cen(x);
		par[c] = p;
		chk[c] = true;

		for(auto i : g[c]) {
			if(i == p || chk[i]) continue;

			makeCen(i, c);
		}
	}

	void init() {
		n = m.size();

		for(int i=1; i<=n; i++) {
			p[i] = i;
			d[i] = 0;
			sum[i] = 0;
			sp[i][0] = 0;
		}

		for(auto i : m) {
			int x = i.fi.fi;
			int y = i.fi.se;

			if(m.find(mp(x, y+1)) != m.end()) Union(m[mp(x, y+1)], i.se);
			if(m.find(mp(x, y-1)) != m.end()) Union(m[mp(x, y-1)], i.se);
		}

		for(auto i : m) {
			int x = i.fi.fi;
			int y = i.fi.se;

			if(m.find(mp(x+1, y)) != m.end()) {
				int j = m[mp(x+1, y)];
				g[Find(j)].eb(Find(i.se));
			}
			if(m.find(mp(x-1, y)) != m.end()) {
				int j = m[mp(x-1, y)];
				g[Find(j)].eb(Find(i.se));
			}
		}

		for(int i=1; i<=n; i++) {
			sort(all(g[i]));
			g[i].erase(unique(all(g[i])), g[i].end());
		}

		dfs(Find(1));
		makeCen(Find(1), 0);

		for(int i=1; i<=n; i++) {
			if(i != Find(i)) continue;

			for(int j=0, k = i; k && j<=20; j++, k = par[k]) {
				dis[i][j] = dist(i, k);
			}
		}
	}
} X, Y;

int main() {
	fast;

	int n;
	cin >> n;

	for(int i=1; i<=n; i++) {
		int x, y;
		cin >> x >> y;

		X.m[mp(x, y)] = i;
		Y.m[mp(y, x)] = i;
	}	

	X.init();
	Y.init();

	int q;
	cin >> q;

	while(q--) {
		int T, x, y;
		cin >> T >> x >> y;

		int u = X.Find(X.m[mp(x, y)]);
		int v = Y.Find(Y.m[mp(y, x)]);

		if(T == 1) {
			for(int i = u, c1 = 0; i; i = X.par[i], c1++) {
				for(int j = v, c2 = 0; j; j = Y.par[j], c2++) {
					ans[n * i + j] = min(ans[n * i + j], X.dis[u][c1] + Y.dis[v][c2] - inf);
				}
			}
		}
		else {
			int ret = inf;
			for(int i = u, c1 = 0; i; i = X.par[i], c1++) {
				for(int j = v, c2 = 0; j; j = Y.par[j], c2++) {
					ret = min(ret, ans[n * i + j] + X.dis[u][c1] + Y.dis[v][c2] + inf);
				}
			}

			if(ret == inf) cout << "-1\n";
			else cout << ret << "\n";
		}
	}
}

Compilation message

C.cpp: In member function 'void T::makeCen(int, int)':
C.cpp:67:23: warning: 'mxi' may be used uninitialized in this function [-Wmaybe-uninitialized]
   67 |   int s = 1, mx = -1, mxi;
      |                       ^~~
C.cpp: In member function 'void T::init()':
C.cpp:67:23: warning: 'mxi' may be used uninitialized in this function [-Wmaybe-uninitialized]

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 3 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 25 ms 7680 KB Output is correct
5 Correct 25 ms 7808 KB Output is correct
6 Correct 27 ms 8056 KB Output is correct
7 Correct 38 ms 8832 KB Output is correct
8 Correct 40 ms 8952 KB Output is correct
9 Correct 41 ms 8956 KB Output is correct
10 Correct 36 ms 8704 KB Output is correct
11 Correct 40 ms 8952 KB Output is correct
12 Correct 39 ms 8952 KB Output is correct
13 Correct 39 ms 9080 KB Output is correct
14 Correct 38 ms 8952 KB Output is correct
15 Correct 40 ms 8952 KB Output is correct
16 Correct 39 ms 8952 KB Output is correct
17 Correct 38 ms 8832 KB Output is correct
18 Correct 41 ms 8824 KB Output is correct
19 Correct 44 ms 8696 KB Output is correct
20 Correct 42 ms 9080 KB Output is correct
21 Correct 41 ms 8952 KB Output is correct
22 Correct 48 ms 9604 KB Output is correct
23 Correct 55 ms 9604 KB Output is correct
24 Correct 51 ms 9732 KB Output is correct
25 Correct 28 ms 8456 KB Output is correct
26 Correct 29 ms 8864 KB Output is correct
27 Correct 25 ms 7928 KB Output is correct
28 Correct 51 ms 9732 KB Output is correct
29 Correct 74 ms 9732 KB Output is correct
30 Correct 52 ms 9860 KB Output is correct
31 Correct 64 ms 9860 KB Output is correct
32 Correct 51 ms 9732 KB Output is correct
33 Correct 54 ms 9740 KB Output is correct
34 Correct 57 ms 9732 KB Output is correct
35 Correct 53 ms 9860 KB Output is correct
36 Correct 30 ms 7936 KB Output is correct
37 Correct 52 ms 9860 KB Output is correct
38 Correct 56 ms 9860 KB Output is correct
39 Correct 60 ms 9732 KB Output is correct
40 Correct 61 ms 9996 KB Output is correct
41 Correct 48 ms 9724 KB Output is correct
42 Correct 55 ms 9604 KB Output is correct
43 Correct 26 ms 8320 KB Output is correct
44 Correct 52 ms 9604 KB Output is correct
45 Correct 49 ms 9848 KB Output is correct
46 Correct 27 ms 8440 KB Output is correct
47 Correct 36 ms 8696 KB Output is correct
48 Correct 34 ms 8704 KB Output is correct
49 Correct 42 ms 8336 KB Output is correct
50 Correct 41 ms 8312 KB Output is correct
51 Correct 29 ms 8192 KB Output is correct
52 Correct 39 ms 8824 KB Output is correct
53 Correct 38 ms 8828 KB Output is correct
54 Correct 51 ms 8824 KB Output is correct
55 Correct 41 ms 8824 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 3 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 25 ms 7680 KB Output is correct
5 Correct 25 ms 7808 KB Output is correct
6 Correct 27 ms 8056 KB Output is correct
7 Correct 38 ms 8832 KB Output is correct
8 Correct 40 ms 8952 KB Output is correct
9 Correct 41 ms 8956 KB Output is correct
10 Correct 36 ms 8704 KB Output is correct
11 Correct 40 ms 8952 KB Output is correct
12 Correct 39 ms 8952 KB Output is correct
13 Correct 39 ms 9080 KB Output is correct
14 Correct 38 ms 8952 KB Output is correct
15 Correct 40 ms 8952 KB Output is correct
16 Correct 39 ms 8952 KB Output is correct
17 Correct 38 ms 8832 KB Output is correct
18 Correct 41 ms 8824 KB Output is correct
19 Correct 44 ms 8696 KB Output is correct
20 Correct 42 ms 9080 KB Output is correct
21 Correct 41 ms 8952 KB Output is correct
22 Correct 48 ms 9604 KB Output is correct
23 Correct 55 ms 9604 KB Output is correct
24 Correct 51 ms 9732 KB Output is correct
25 Correct 28 ms 8456 KB Output is correct
26 Correct 29 ms 8864 KB Output is correct
27 Correct 25 ms 7928 KB Output is correct
28 Correct 51 ms 9732 KB Output is correct
29 Correct 74 ms 9732 KB Output is correct
30 Correct 52 ms 9860 KB Output is correct
31 Correct 64 ms 9860 KB Output is correct
32 Correct 51 ms 9732 KB Output is correct
33 Correct 54 ms 9740 KB Output is correct
34 Correct 57 ms 9732 KB Output is correct
35 Correct 53 ms 9860 KB Output is correct
36 Correct 30 ms 7936 KB Output is correct
37 Correct 52 ms 9860 KB Output is correct
38 Correct 56 ms 9860 KB Output is correct
39 Correct 60 ms 9732 KB Output is correct
40 Correct 61 ms 9996 KB Output is correct
41 Correct 48 ms 9724 KB Output is correct
42 Correct 55 ms 9604 KB Output is correct
43 Correct 26 ms 8320 KB Output is correct
44 Correct 52 ms 9604 KB Output is correct
45 Correct 49 ms 9848 KB Output is correct
46 Correct 27 ms 8440 KB Output is correct
47 Correct 36 ms 8696 KB Output is correct
48 Correct 34 ms 8704 KB Output is correct
49 Correct 42 ms 8336 KB Output is correct
50 Correct 41 ms 8312 KB Output is correct
51 Correct 29 ms 8192 KB Output is correct
52 Correct 39 ms 8824 KB Output is correct
53 Correct 38 ms 8828 KB Output is correct
54 Correct 51 ms 8824 KB Output is correct
55 Correct 41 ms 8824 KB Output is correct
56 Correct 208 ms 9080 KB Output is correct
57 Correct 233 ms 8952 KB Output is correct
58 Correct 185 ms 9208 KB Output is correct
59 Correct 344 ms 10964 KB Output is correct
60 Correct 332 ms 10528 KB Output is correct
61 Correct 313 ms 11100 KB Output is correct
62 Correct 319 ms 10884 KB Output is correct
63 Correct 312 ms 11012 KB Output is correct
64 Correct 340 ms 11136 KB Output is correct
65 Correct 338 ms 10756 KB Output is correct
66 Correct 319 ms 10672 KB Output is correct
67 Correct 378 ms 10528 KB Output is correct
68 Correct 328 ms 11012 KB Output is correct
69 Correct 393 ms 10132 KB Output is correct
70 Correct 323 ms 11012 KB Output is correct
71 Correct 349 ms 10232 KB Output is correct
72 Correct 364 ms 11140 KB Output is correct
73 Correct 308 ms 10628 KB Output is correct
74 Correct 144 ms 10360 KB Output is correct
75 Correct 183 ms 10364 KB Output is correct
76 Correct 113 ms 9592 KB Output is correct
77 Correct 550 ms 11628 KB Output is correct
78 Correct 512 ms 11832 KB Output is correct
79 Correct 121 ms 9724 KB Output is correct
80 Correct 504 ms 11864 KB Output is correct
81 Correct 616 ms 11576 KB Output is correct
82 Correct 436 ms 11140 KB Output is correct
83 Correct 463 ms 11396 KB Output is correct
84 Correct 134 ms 10104 KB Output is correct
85 Correct 493 ms 11268 KB Output is correct
86 Correct 445 ms 11012 KB Output is correct
87 Correct 129 ms 9592 KB Output is correct
88 Correct 315 ms 10360 KB Output is correct
89 Correct 287 ms 10232 KB Output is correct
90 Correct 263 ms 10236 KB Output is correct
91 Correct 282 ms 9464 KB Output is correct
92 Correct 212 ms 9208 KB Output is correct
93 Correct 366 ms 10104 KB Output is correct
94 Correct 336 ms 10616 KB Output is correct
95 Correct 401 ms 10488 KB Output is correct
96 Correct 408 ms 10488 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1266 ms 64180 KB Output is correct
2 Correct 1234 ms 62908 KB Output is correct
3 Execution timed out 2086 ms 97188 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2081 ms 90468 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 3 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 25 ms 7680 KB Output is correct
5 Correct 25 ms 7808 KB Output is correct
6 Correct 27 ms 8056 KB Output is correct
7 Correct 38 ms 8832 KB Output is correct
8 Correct 40 ms 8952 KB Output is correct
9 Correct 41 ms 8956 KB Output is correct
10 Correct 36 ms 8704 KB Output is correct
11 Correct 40 ms 8952 KB Output is correct
12 Correct 39 ms 8952 KB Output is correct
13 Correct 39 ms 9080 KB Output is correct
14 Correct 38 ms 8952 KB Output is correct
15 Correct 40 ms 8952 KB Output is correct
16 Correct 39 ms 8952 KB Output is correct
17 Correct 38 ms 8832 KB Output is correct
18 Correct 41 ms 8824 KB Output is correct
19 Correct 44 ms 8696 KB Output is correct
20 Correct 42 ms 9080 KB Output is correct
21 Correct 41 ms 8952 KB Output is correct
22 Correct 48 ms 9604 KB Output is correct
23 Correct 55 ms 9604 KB Output is correct
24 Correct 51 ms 9732 KB Output is correct
25 Correct 28 ms 8456 KB Output is correct
26 Correct 29 ms 8864 KB Output is correct
27 Correct 25 ms 7928 KB Output is correct
28 Correct 51 ms 9732 KB Output is correct
29 Correct 74 ms 9732 KB Output is correct
30 Correct 52 ms 9860 KB Output is correct
31 Correct 64 ms 9860 KB Output is correct
32 Correct 51 ms 9732 KB Output is correct
33 Correct 54 ms 9740 KB Output is correct
34 Correct 57 ms 9732 KB Output is correct
35 Correct 53 ms 9860 KB Output is correct
36 Correct 30 ms 7936 KB Output is correct
37 Correct 52 ms 9860 KB Output is correct
38 Correct 56 ms 9860 KB Output is correct
39 Correct 60 ms 9732 KB Output is correct
40 Correct 61 ms 9996 KB Output is correct
41 Correct 48 ms 9724 KB Output is correct
42 Correct 55 ms 9604 KB Output is correct
43 Correct 26 ms 8320 KB Output is correct
44 Correct 52 ms 9604 KB Output is correct
45 Correct 49 ms 9848 KB Output is correct
46 Correct 27 ms 8440 KB Output is correct
47 Correct 36 ms 8696 KB Output is correct
48 Correct 34 ms 8704 KB Output is correct
49 Correct 42 ms 8336 KB Output is correct
50 Correct 41 ms 8312 KB Output is correct
51 Correct 29 ms 8192 KB Output is correct
52 Correct 39 ms 8824 KB Output is correct
53 Correct 38 ms 8828 KB Output is correct
54 Correct 51 ms 8824 KB Output is correct
55 Correct 41 ms 8824 KB Output is correct
56 Correct 208 ms 9080 KB Output is correct
57 Correct 233 ms 8952 KB Output is correct
58 Correct 185 ms 9208 KB Output is correct
59 Correct 344 ms 10964 KB Output is correct
60 Correct 332 ms 10528 KB Output is correct
61 Correct 313 ms 11100 KB Output is correct
62 Correct 319 ms 10884 KB Output is correct
63 Correct 312 ms 11012 KB Output is correct
64 Correct 340 ms 11136 KB Output is correct
65 Correct 338 ms 10756 KB Output is correct
66 Correct 319 ms 10672 KB Output is correct
67 Correct 378 ms 10528 KB Output is correct
68 Correct 328 ms 11012 KB Output is correct
69 Correct 393 ms 10132 KB Output is correct
70 Correct 323 ms 11012 KB Output is correct
71 Correct 349 ms 10232 KB Output is correct
72 Correct 364 ms 11140 KB Output is correct
73 Correct 308 ms 10628 KB Output is correct
74 Correct 144 ms 10360 KB Output is correct
75 Correct 183 ms 10364 KB Output is correct
76 Correct 113 ms 9592 KB Output is correct
77 Correct 550 ms 11628 KB Output is correct
78 Correct 512 ms 11832 KB Output is correct
79 Correct 121 ms 9724 KB Output is correct
80 Correct 504 ms 11864 KB Output is correct
81 Correct 616 ms 11576 KB Output is correct
82 Correct 436 ms 11140 KB Output is correct
83 Correct 463 ms 11396 KB Output is correct
84 Correct 134 ms 10104 KB Output is correct
85 Correct 493 ms 11268 KB Output is correct
86 Correct 445 ms 11012 KB Output is correct
87 Correct 129 ms 9592 KB Output is correct
88 Correct 315 ms 10360 KB Output is correct
89 Correct 287 ms 10232 KB Output is correct
90 Correct 263 ms 10236 KB Output is correct
91 Correct 282 ms 9464 KB Output is correct
92 Correct 212 ms 9208 KB Output is correct
93 Correct 366 ms 10104 KB Output is correct
94 Correct 336 ms 10616 KB Output is correct
95 Correct 401 ms 10488 KB Output is correct
96 Correct 408 ms 10488 KB Output is correct
97 Correct 1266 ms 64180 KB Output is correct
98 Correct 1234 ms 62908 KB Output is correct
99 Execution timed out 2086 ms 97188 KB Time limit exceeded
100 Halted 0 ms 0 KB -