oj.uz

Submission #113636

# Submission time Handle Problem Language Result Execution time Memory
113636 2019-05-27T08:55:25 Z aminra Port Facility (JOI17_port_facility) C++14
100 / 100
 3516 ms 412692 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
const int MOD = (int)1e9 + 7;
const int MAXN = (int)2e6 + 3;
const int infint = (int)2e9;
const ll inf = (ll)2e18;
int a[MAXN], b[MAXN], id[MAXN], n, par[MAXN], sz;
int get(int u)
{
	return par[u] < 0 ? u : par[u] = get(par[u]);
}
void merge(int u, int v)
{
	if((u = get(u)) == (v = get(v)))
		return;
	sz--;
	if(par[u] > par[v])
		swap(u, v);
	par[u] += par[v];
	par[v] = u;
}
vector<int> seg[4 * MAXN];
bool cyc;
bool cmp(int u, int v)
{
	return a[u] < a[v];
}
void add(int node, int st, int en, int idx, int val)
{
	for (auto u : seg[node])
		merge(u, val);
	bool flg = (seg[node].size() > 0);
	seg[node].clear();
	if(flg)
		seg[node].push_back(val);
	if(en - st < 2)
		return;
	int mid = (st + en) >> 1;
	if(idx < mid)
		add(node << 1, st, mid, idx, val);
	else
		add(node << 1 | 1, mid, en, idx, val);
	return;
}
void ask(int node, int st, int en, int l, int r, int val)
{
	if(l >= en || st >= r)
		return;
	if(l <= st && en <= r)
	{
		seg[node].push_back(val);
		return;
	}
	int mid = (st + en) >> 1;
	ask(node << 1, st, mid, l, r, val);
	ask(node << 1 | 1, mid, en, l, r, val);
	return;
}
int pwr(int a, int b)
{
	if(b == 0)
		return 1;
	int c = pwr(a, b >> 1);
	c = 1LL * c * c % MOD;
	if(b & 1)
		c = 1LL * c * a % MOD;
	return c;
}
map<int, int> pos;
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
	cin >> n;
	sz = n;
	for (int i = 0; i < n; i++)
		cin >> a[i] >> b[i];
	memset(par, -1, sizeof par);
	for (int i = 0; i < n; i++)
		id[i] = i, a[i]--, b[i]--;
	sort(id, id + n, cmp);
	//check if there's odd cycle
	for (int i = 0; i < n; i++)
	{
        auto st = pos.lower_bound(a[id[i]]), ft = pos.lower_bound(b[id[i]]);
        while(st != ft)
		{
            merge(id[i], st -> second + n); 
			merge(id[i] + n, st -> second);
            if(get(st -> second) == get((--ft) -> second))
				break;
            ft++;
            st++;
        }
        pos[b[id[i]]] = id[i];
    }
    for (int i = 0; i < n; i++)
    	if(get(i) == get(i + n))
    		return cout << 0, 0;
    		
    sz = n;		
    memset(par, -1, sizeof par);
	for (int i = n - 1; i >= 0; i--)
	{
		add(1, 0, 2 * n, b[id[i]], id[i]);
		ask(1, 0, 2 * n, a[id[i]], b[id[i]] + 1, id[i]);
	}
	cout << pwr(2, sz);
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 196088 KB Output is correct
2 Correct 170 ms 196220 KB Output is correct
3 Correct 164 ms 196088 KB Output is correct
4 Correct 167 ms 196088 KB Output is correct
5 Correct 164 ms 196032 KB Output is correct
6 Correct 174 ms 196100 KB Output is correct
7 Correct 165 ms 196140 KB Output is correct
8 Correct 166 ms 196088 KB Output is correct
9 Correct 166 ms 196088 KB Output is correct
10 Correct 164 ms 196088 KB Output is correct
11 Correct 163 ms 196300 KB Output is correct
12 Correct 161 ms 196036 KB Output is correct
13 Correct 161 ms 196104 KB Output is correct
14 Correct 177 ms 196088 KB Output is correct
15 Correct 160 ms 196016 KB Output is correct
16 Correct 167 ms 196036 KB Output is correct
17 Correct 158 ms 196060 KB Output is correct
18 Correct 161 ms 196100 KB Output is correct
19 Correct 161 ms 196132 KB Output is correct
20 Correct 160 ms 196128 KB Output is correct
21 Correct 161 ms 196032 KB Output is correct
22 Correct 161 ms 196088 KB Output is correct
23 Correct 312 ms 196088 KB Output is correct
24 Correct 163 ms 196088 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 196088 KB Output is correct
2 Correct 170 ms 196220 KB Output is correct
3 Correct 164 ms 196088 KB Output is correct
4 Correct 167 ms 196088 KB Output is correct
5 Correct 164 ms 196032 KB Output is correct
6 Correct 174 ms 196100 KB Output is correct
7 Correct 165 ms 196140 KB Output is correct
8 Correct 166 ms 196088 KB Output is correct
9 Correct 166 ms 196088 KB Output is correct
10 Correct 164 ms 196088 KB Output is correct
11 Correct 163 ms 196300 KB Output is correct
12 Correct 161 ms 196036 KB Output is correct
13 Correct 161 ms 196104 KB Output is correct
14 Correct 177 ms 196088 KB Output is correct
15 Correct 160 ms 196016 KB Output is correct
16 Correct 167 ms 196036 KB Output is correct
17 Correct 158 ms 196060 KB Output is correct
18 Correct 161 ms 196100 KB Output is correct
19 Correct 161 ms 196132 KB Output is correct
20 Correct 160 ms 196128 KB Output is correct
21 Correct 161 ms 196032 KB Output is correct
22 Correct 161 ms 196088 KB Output is correct
23 Correct 312 ms 196088 KB Output is correct
24 Correct 163 ms 196088 KB Output is correct
25 Correct 169 ms 196296 KB Output is correct
26 Correct 165 ms 196504 KB Output is correct
27 Correct 165 ms 196292 KB Output is correct
28 Correct 163 ms 196372 KB Output is correct
29 Correct 166 ms 196344 KB Output is correct
30 Correct 165 ms 196268 KB Output is correct
31 Correct 166 ms 196344 KB Output is correct
32 Correct 172 ms 196360 KB Output is correct
33 Correct 170 ms 196216 KB Output is correct
34 Correct 164 ms 196216 KB Output is correct
35 Correct 166 ms 196216 KB Output is correct
36 Correct 169 ms 196344 KB Output is correct
37 Correct 167 ms 196260 KB Output is correct
38 Correct 165 ms 196492 KB Output is correct
39 Correct 160 ms 196208 KB Output is correct
40 Correct 160 ms 196216 KB Output is correct
41 Correct 162 ms 196496 KB Output is correct
42 Correct 161 ms 196452 KB Output is correct
43 Correct 163 ms 196284 KB Output is correct
44 Correct 164 ms 196344 KB Output is correct

Subtask #3
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 196088 KB Output is correct
2 Correct 170 ms 196220 KB Output is correct
3 Correct 164 ms 196088 KB Output is correct
4 Correct 167 ms 196088 KB Output is correct
5 Correct 164 ms 196032 KB Output is correct
6 Correct 174 ms 196100 KB Output is correct
7 Correct 165 ms 196140 KB Output is correct
8 Correct 166 ms 196088 KB Output is correct
9 Correct 166 ms 196088 KB Output is correct
10 Correct 164 ms 196088 KB Output is correct
11 Correct 163 ms 196300 KB Output is correct
12 Correct 161 ms 196036 KB Output is correct
13 Correct 161 ms 196104 KB Output is correct
14 Correct 177 ms 196088 KB Output is correct
15 Correct 160 ms 196016 KB Output is correct
16 Correct 167 ms 196036 KB Output is correct
17 Correct 158 ms 196060 KB Output is correct
18 Correct 161 ms 196100 KB Output is correct
19 Correct 161 ms 196132 KB Output is correct
20 Correct 160 ms 196128 KB Output is correct
21 Correct 161 ms 196032 KB Output is correct
22 Correct 161 ms 196088 KB Output is correct
23 Correct 312 ms 196088 KB Output is correct
24 Correct 163 ms 196088 KB Output is correct
25 Correct 169 ms 196296 KB Output is correct
26 Correct 165 ms 196504 KB Output is correct
27 Correct 165 ms 196292 KB Output is correct
28 Correct 163 ms 196372 KB Output is correct
29 Correct 166 ms 196344 KB Output is correct
30 Correct 165 ms 196268 KB Output is correct
31 Correct 166 ms 196344 KB Output is correct
32 Correct 172 ms 196360 KB Output is correct
33 Correct 170 ms 196216 KB Output is correct
34 Correct 164 ms 196216 KB Output is correct
35 Correct 166 ms 196216 KB Output is correct
36 Correct 169 ms 196344 KB Output is correct
37 Correct 167 ms 196260 KB Output is correct
38 Correct 165 ms 196492 KB Output is correct
39 Correct 160 ms 196208 KB Output is correct
40 Correct 160 ms 196216 KB Output is correct
41 Correct 162 ms 196496 KB Output is correct
42 Correct 161 ms 196452 KB Output is correct
43 Correct 163 ms 196284 KB Output is correct
44 Correct 164 ms 196344 KB Output is correct
45 Correct 367 ms 212016 KB Output is correct
46 Correct 362 ms 213160 KB Output is correct
47 Correct 356 ms 213360 KB Output is correct
48 Correct 353 ms 213144 KB Output is correct
49 Correct 363 ms 213300 KB Output is correct
50 Correct 244 ms 203268 KB Output is correct
51 Correct 250 ms 203496 KB Output is correct
52 Correct 309 ms 208548 KB Output is correct
53 Correct 347 ms 215796 KB Output is correct
54 Correct 235 ms 203256 KB Output is correct
55 Correct 252 ms 203128 KB Output is correct
56 Correct 327 ms 203232 KB Output is correct
57 Correct 320 ms 208888 KB Output is correct
58 Correct 316 ms 208888 KB Output is correct
59 Correct 342 ms 212032 KB Output is correct
60 Correct 338 ms 212344 KB Output is correct
61 Correct 352 ms 212600 KB Output is correct
62 Correct 226 ms 203256 KB Output is correct
63 Correct 230 ms 203128 KB Output is correct
64 Correct 240 ms 203304 KB Output is correct
65 Correct 263 ms 203256 KB Output is correct
66 Correct 255 ms 203240 KB Output is correct
67 Correct 399 ms 216696 KB Output is correct
68 Correct 367 ms 216572 KB Output is correct
69 Correct 391 ms 216916 KB Output is correct
70 Correct 382 ms 216924 KB Output is correct
71 Correct 362 ms 215740 KB Output is correct
72 Correct 350 ms 215776 KB Output is correct
73 Correct 387 ms 215852 KB Output is correct
74 Correct 372 ms 215828 KB Output is correct
75 Correct 334 ms 210564 KB Output is correct
76 Correct 337 ms 210504 KB Output is correct
77 Correct 261 ms 203256 KB Output is correct
78 Correct 357 ms 213104 KB Output is correct
79 Correct 352 ms 213232 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 196088 KB Output is correct
2 Correct 170 ms 196220 KB Output is correct
3 Correct 164 ms 196088 KB Output is correct
4 Correct 167 ms 196088 KB Output is correct
5 Correct 164 ms 196032 KB Output is correct
6 Correct 174 ms 196100 KB Output is correct
7 Correct 165 ms 196140 KB Output is correct
8 Correct 166 ms 196088 KB Output is correct
9 Correct 166 ms 196088 KB Output is correct
10 Correct 164 ms 196088 KB Output is correct
11 Correct 163 ms 196300 KB Output is correct
12 Correct 161 ms 196036 KB Output is correct
13 Correct 161 ms 196104 KB Output is correct
14 Correct 177 ms 196088 KB Output is correct
15 Correct 160 ms 196016 KB Output is correct
16 Correct 167 ms 196036 KB Output is correct
17 Correct 158 ms 196060 KB Output is correct
18 Correct 161 ms 196100 KB Output is correct
19 Correct 161 ms 196132 KB Output is correct
20 Correct 160 ms 196128 KB Output is correct
21 Correct 161 ms 196032 KB Output is correct
22 Correct 161 ms 196088 KB Output is correct
23 Correct 312 ms 196088 KB Output is correct
24 Correct 163 ms 196088 KB Output is correct
25 Correct 169 ms 196296 KB Output is correct
26 Correct 165 ms 196504 KB Output is correct
27 Correct 165 ms 196292 KB Output is correct
28 Correct 163 ms 196372 KB Output is correct
29 Correct 166 ms 196344 KB Output is correct
30 Correct 165 ms 196268 KB Output is correct
31 Correct 166 ms 196344 KB Output is correct
32 Correct 172 ms 196360 KB Output is correct
33 Correct 170 ms 196216 KB Output is correct
34 Correct 164 ms 196216 KB Output is correct
35 Correct 166 ms 196216 KB Output is correct
36 Correct 169 ms 196344 KB Output is correct
37 Correct 167 ms 196260 KB Output is correct
38 Correct 165 ms 196492 KB Output is correct
39 Correct 160 ms 196208 KB Output is correct
40 Correct 160 ms 196216 KB Output is correct
41 Correct 162 ms 196496 KB Output is correct
42 Correct 161 ms 196452 KB Output is correct
43 Correct 163 ms 196284 KB Output is correct
44 Correct 164 ms 196344 KB Output is correct
45 Correct 367 ms 212016 KB Output is correct
46 Correct 362 ms 213160 KB Output is correct
47 Correct 356 ms 213360 KB Output is correct
48 Correct 353 ms 213144 KB Output is correct
49 Correct 363 ms 213300 KB Output is correct
50 Correct 244 ms 203268 KB Output is correct
51 Correct 250 ms 203496 KB Output is correct
52 Correct 309 ms 208548 KB Output is correct
53 Correct 347 ms 215796 KB Output is correct
54 Correct 235 ms 203256 KB Output is correct
55 Correct 252 ms 203128 KB Output is correct
56 Correct 327 ms 203232 KB Output is correct
57 Correct 320 ms 208888 KB Output is correct
58 Correct 316 ms 208888 KB Output is correct
59 Correct 342 ms 212032 KB Output is correct
60 Correct 338 ms 212344 KB Output is correct
61 Correct 352 ms 212600 KB Output is correct
62 Correct 226 ms 203256 KB Output is correct
63 Correct 230 ms 203128 KB Output is correct
64 Correct 240 ms 203304 KB Output is correct
65 Correct 263 ms 203256 KB Output is correct
66 Correct 255 ms 203240 KB Output is correct
67 Correct 399 ms 216696 KB Output is correct
68 Correct 367 ms 216572 KB Output is correct
69 Correct 391 ms 216916 KB Output is correct
70 Correct 382 ms 216924 KB Output is correct
71 Correct 362 ms 215740 KB Output is correct
72 Correct 350 ms 215776 KB Output is correct
73 Correct 387 ms 215852 KB Output is correct
74 Correct 372 ms 215828 KB Output is correct
75 Correct 334 ms 210564 KB Output is correct
76 Correct 337 ms 210504 KB Output is correct
77 Correct 261 ms 203256 KB Output is correct
78 Correct 357 ms 213104 KB Output is correct
79 Correct 352 ms 213232 KB Output is correct
80 Correct 2892 ms 373052 KB Output is correct
81 Correct 2795 ms 373308 KB Output is correct
82 Correct 2862 ms 374344 KB Output is correct
83 Correct 2923 ms 373160 KB Output is correct
84 Correct 2850 ms 373088 KB Output is correct
85 Correct 1288 ms 269452 KB Output is correct
86 Correct 1258 ms 269436 KB Output is correct
87 Correct 2160 ms 317112 KB Output is correct
88 Correct 2842 ms 397340 KB Output is correct
89 Correct 1271 ms 269460 KB Output is correct
90 Correct 1337 ms 269548 KB Output is correct
91 Correct 1320 ms 269512 KB Output is correct
92 Correct 2330 ms 324700 KB Output is correct
93 Correct 2269 ms 321400 KB Output is correct
94 Correct 2460 ms 359828 KB Output is correct
95 Correct 2643 ms 363392 KB Output is correct
96 Correct 2701 ms 365328 KB Output is correct
97 Correct 1116 ms 269508 KB Output is correct
98 Correct 1214 ms 269508 KB Output is correct
99 Correct 1192 ms 269460 KB Output is correct
100 Correct 2306 ms 269556 KB Output is correct
101 Correct 2300 ms 269432 KB Output is correct
102 Correct 3516 ms 408960 KB Output is correct
103 Correct 3402 ms 408940 KB Output is correct
104 Correct 3447 ms 412648 KB Output is correct
105 Correct 3275 ms 412692 KB Output is correct
106 Correct 2994 ms 397452 KB Output is correct
107 Correct 2946 ms 397128 KB Output is correct
108 Correct 3073 ms 397256 KB Output is correct
109 Correct 3089 ms 397228 KB Output is correct
110 Correct 2413 ms 340388 KB Output is correct
111 Correct 2426 ms 340312 KB Output is correct
112 Correct 1498 ms 269484 KB Output is correct
113 Correct 2801 ms 374328 KB Output is correct
114 Correct 2838 ms 373240 KB Output is correct