oj.uz

Submission #21026

# Submission time Handle Problem Language Result Execution time Memory
21026 2017-03-30T04:25:41 Z ainta Port Facility (JOI17_port_facility) C++14
100 / 100
 2783 ms 156568 KB 
#include <cstdio>
#include <algorithm>
#define SZ 2097152
#define pii pair<int,int>
using namespace std;
int n, chk[1010000];
int P[2010000];
pii IT[SZ+SZ][2];
struct point{
	int b, e;
}w[1010000];
void Ins(int ck, int a, pii b){
	a += SZ;
	IT[a][ck] = b;
	while(a!=1){
		a>>=1;
		if(ck) IT[a][ck] =  min(IT[a+a][ck], IT[a+a+1][ck]);
		else IT[a][ck] =  max(IT[a+a][ck], IT[a+a+1][ck]);
	}
}
pii Get(int ck, int b, int e){
	b += SZ, e += SZ;
	pii r;
	if(ck) r = pii(n+n+1,0);
	else r = pii(0,0);
	while(b<=e){
		if(ck) r = min(r, min(IT[b][ck], IT[e][ck]));
		else r = max(r, max(IT[b][ck],IT[e][ck]));
		b=(b+1)>>1,e=(e-1)>>1;
	}
	return r;
}
void DFS(int a, int col){
	chk[a] = col;
	int b = w[a].b, e = w[a].e;
	Ins(0, b, pii(0,0));
	Ins(1, e, pii(n+n+1,0));
	while(1){
		pii tp = Get(0, b+1, e-1);
		if(tp.first < e)break;
		DFS(tp.second, 3-col);
	}
	while(1){
		pii tp = Get(1, b+1, e-1);
		if(tp.first > b)break;
		DFS(tp.second, 3-col);
	}
}
int st[2010000];
bool Check(int a){
	int i, top = 0;
	for(i=1;i<=n+n;i++)P[i]=0;
	for(i=1;i<=n;i++){
		if(chk[i] == a)P[w[i].b] = i, P[w[i].e] = i;
	}
	for(i=1;i<=n+n;i++){
		if(!P[i])continue;
		if(top && st[top] == P[i])top--;
		else st[++top] = P[i];
	}
	if(!top)return true;
	return false;
}
int main(){
	int i, res = 1;
	scanf("%d",&n);
	for(i=1;i<SZ+SZ;i++){
		IT[i][0] = pii(0,0);
		IT[i][1] = pii(n+n+1,0);
	}
	for(i=1;i<=n;i++){
		scanf("%d%d",&w[i].b,&w[i].e);
		Ins(0, w[i].b, pii(w[i].e, i));
		Ins(1, w[i].e, pii(w[i].b, i));
	}
	for(i=1;i<=n;i++){
		if(!chk[i]){
			DFS(i,1);
			res = res * 2 % 1000000007;
		}
	}
	if(Check(1) && Check(2)){
		printf("%d\n",res);
	}
	else printf("0\n");
}

Compilation message

port_facility.cpp: In function 'int main()':
port_facility.cpp:66:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
port_facility.cpp:72:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&w[i].b,&w[i].e);
                                ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 94192 KB Output is correct
2 Correct 19 ms 94192 KB Output is correct
3 Correct 19 ms 94192 KB Output is correct
4 Correct 9 ms 94192 KB Output is correct
5 Correct 16 ms 94192 KB Output is correct
6 Correct 9 ms 94192 KB Output is correct
7 Correct 6 ms 94192 KB Output is correct
8 Correct 9 ms 94192 KB Output is correct
9 Correct 13 ms 94192 KB Output is correct
10 Correct 6 ms 94192 KB Output is correct
11 Correct 9 ms 94192 KB Output is correct
12 Correct 13 ms 94192 KB Output is correct
13 Correct 13 ms 94192 KB Output is correct
14 Correct 9 ms 94192 KB Output is correct
15 Correct 16 ms 94192 KB Output is correct
16 Correct 16 ms 94192 KB Output is correct
17 Correct 16 ms 94192 KB Output is correct
18 Correct 9 ms 94192 KB Output is correct
19 Correct 16 ms 94192 KB Output is correct
20 Correct 6 ms 94192 KB Output is correct
21 Correct 13 ms 94192 KB Output is correct
22 Correct 9 ms 94192 KB Output is correct
23 Correct 19 ms 94192 KB Output is correct
24 Correct 19 ms 94192 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 94192 KB Output is correct
2 Correct 19 ms 94192 KB Output is correct
3 Correct 19 ms 94192 KB Output is correct
4 Correct 9 ms 94192 KB Output is correct
5 Correct 16 ms 94192 KB Output is correct
6 Correct 9 ms 94192 KB Output is correct
7 Correct 6 ms 94192 KB Output is correct
8 Correct 9 ms 94192 KB Output is correct
9 Correct 13 ms 94192 KB Output is correct
10 Correct 6 ms 94192 KB Output is correct
11 Correct 9 ms 94192 KB Output is correct
12 Correct 13 ms 94192 KB Output is correct
13 Correct 13 ms 94192 KB Output is correct
14 Correct 9 ms 94192 KB Output is correct
15 Correct 16 ms 94192 KB Output is correct
16 Correct 16 ms 94192 KB Output is correct
17 Correct 16 ms 94192 KB Output is correct
18 Correct 9 ms 94192 KB Output is correct
19 Correct 16 ms 94192 KB Output is correct
20 Correct 6 ms 94192 KB Output is correct
21 Correct 13 ms 94192 KB Output is correct
22 Correct 9 ms 94192 KB Output is correct
23 Correct 19 ms 94192 KB Output is correct
24 Correct 19 ms 94192 KB Output is correct
25 Correct 16 ms 94192 KB Output is correct
26 Correct 9 ms 94192 KB Output is correct
27 Correct 19 ms 94192 KB Output is correct
28 Correct 13 ms 94192 KB Output is correct
29 Correct 6 ms 94192 KB Output is correct
30 Correct 6 ms 94192 KB Output is correct
31 Correct 19 ms 94192 KB Output is correct
32 Correct 9 ms 94192 KB Output is correct
33 Correct 13 ms 94192 KB Output is correct
34 Correct 13 ms 94192 KB Output is correct
35 Correct 26 ms 94192 KB Output is correct
36 Correct 16 ms 94192 KB Output is correct
37 Correct 16 ms 94192 KB Output is correct
38 Correct 6 ms 94192 KB Output is correct
39 Correct 13 ms 94192 KB Output is correct
40 Correct 19 ms 94192 KB Output is correct
41 Correct 16 ms 94192 KB Output is correct
42 Correct 13 ms 94192 KB Output is correct
43 Correct 23 ms 94196 KB Output is correct
44 Correct 16 ms 94196 KB Output is correct

Subtask #3
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 94192 KB Output is correct
2 Correct 19 ms 94192 KB Output is correct
3 Correct 19 ms 94192 KB Output is correct
4 Correct 9 ms 94192 KB Output is correct
5 Correct 16 ms 94192 KB Output is correct
6 Correct 9 ms 94192 KB Output is correct
7 Correct 6 ms 94192 KB Output is correct
8 Correct 9 ms 94192 KB Output is correct
9 Correct 13 ms 94192 KB Output is correct
10 Correct 6 ms 94192 KB Output is correct
11 Correct 9 ms 94192 KB Output is correct
12 Correct 13 ms 94192 KB Output is correct
13 Correct 13 ms 94192 KB Output is correct
14 Correct 9 ms 94192 KB Output is correct
15 Correct 16 ms 94192 KB Output is correct
16 Correct 16 ms 94192 KB Output is correct
17 Correct 16 ms 94192 KB Output is correct
18 Correct 9 ms 94192 KB Output is correct
19 Correct 16 ms 94192 KB Output is correct
20 Correct 6 ms 94192 KB Output is correct
21 Correct 13 ms 94192 KB Output is correct
22 Correct 9 ms 94192 KB Output is correct
23 Correct 19 ms 94192 KB Output is correct
24 Correct 19 ms 94192 KB Output is correct
25 Correct 16 ms 94192 KB Output is correct
26 Correct 9 ms 94192 KB Output is correct
27 Correct 19 ms 94192 KB Output is correct
28 Correct 13 ms 94192 KB Output is correct
29 Correct 6 ms 94192 KB Output is correct
30 Correct 6 ms 94192 KB Output is correct
31 Correct 19 ms 94192 KB Output is correct
32 Correct 9 ms 94192 KB Output is correct
33 Correct 13 ms 94192 KB Output is correct
34 Correct 13 ms 94192 KB Output is correct
35 Correct 26 ms 94192 KB Output is correct
36 Correct 16 ms 94192 KB Output is correct
37 Correct 16 ms 94192 KB Output is correct
38 Correct 6 ms 94192 KB Output is correct
39 Correct 13 ms 94192 KB Output is correct
40 Correct 19 ms 94192 KB Output is correct
41 Correct 16 ms 94192 KB Output is correct
42 Correct 13 ms 94192 KB Output is correct
43 Correct 23 ms 94196 KB Output is correct
44 Correct 16 ms 94196 KB Output is correct
45 Correct 153 ms 94948 KB Output is correct
46 Correct 163 ms 95796 KB Output is correct
47 Correct 163 ms 94384 KB Output is correct
48 Correct 169 ms 95768 KB Output is correct
49 Correct 173 ms 94508 KB Output is correct
50 Correct 156 ms 95568 KB Output is correct
51 Correct 163 ms 95528 KB Output is correct
52 Correct 106 ms 94192 KB Output is correct
53 Correct 153 ms 94192 KB Output is correct
54 Correct 139 ms 100320 KB Output is correct
55 Correct 133 ms 97188 KB Output is correct
56 Correct 153 ms 97196 KB Output is correct
57 Correct 113 ms 94192 KB Output is correct
58 Correct 133 ms 94192 KB Output is correct
59 Correct 129 ms 94192 KB Output is correct
60 Correct 136 ms 94192 KB Output is correct
61 Correct 163 ms 94192 KB Output is correct
62 Correct 123 ms 94192 KB Output is correct
63 Correct 149 ms 94192 KB Output is correct
64 Correct 159 ms 94192 KB Output is correct
65 Correct 219 ms 100320 KB Output is correct
66 Correct 226 ms 100312 KB Output is correct
67 Correct 156 ms 97184 KB Output is correct
68 Correct 176 ms 97184 KB Output is correct
69 Correct 153 ms 96852 KB Output is correct
70 Correct 153 ms 96836 KB Output is correct
71 Correct 133 ms 100316 KB Output is correct
72 Correct 149 ms 100312 KB Output is correct
73 Correct 146 ms 98232 KB Output is correct
74 Correct 146 ms 98232 KB Output is correct
75 Correct 109 ms 97788 KB Output is correct
76 Correct 106 ms 100320 KB Output is correct
77 Correct 109 ms 100316 KB Output is correct
78 Correct 153 ms 95600 KB Output is correct
79 Correct 159 ms 95004 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 94192 KB Output is correct
2 Correct 19 ms 94192 KB Output is correct
3 Correct 19 ms 94192 KB Output is correct
4 Correct 9 ms 94192 KB Output is correct
5 Correct 16 ms 94192 KB Output is correct
6 Correct 9 ms 94192 KB Output is correct
7 Correct 6 ms 94192 KB Output is correct
8 Correct 9 ms 94192 KB Output is correct
9 Correct 13 ms 94192 KB Output is correct
10 Correct 6 ms 94192 KB Output is correct
11 Correct 9 ms 94192 KB Output is correct
12 Correct 13 ms 94192 KB Output is correct
13 Correct 13 ms 94192 KB Output is correct
14 Correct 9 ms 94192 KB Output is correct
15 Correct 16 ms 94192 KB Output is correct
16 Correct 16 ms 94192 KB Output is correct
17 Correct 16 ms 94192 KB Output is correct
18 Correct 9 ms 94192 KB Output is correct
19 Correct 16 ms 94192 KB Output is correct
20 Correct 6 ms 94192 KB Output is correct
21 Correct 13 ms 94192 KB Output is correct
22 Correct 9 ms 94192 KB Output is correct
23 Correct 19 ms 94192 KB Output is correct
24 Correct 19 ms 94192 KB Output is correct
25 Correct 16 ms 94192 KB Output is correct
26 Correct 9 ms 94192 KB Output is correct
27 Correct 19 ms 94192 KB Output is correct
28 Correct 13 ms 94192 KB Output is correct
29 Correct 6 ms 94192 KB Output is correct
30 Correct 6 ms 94192 KB Output is correct
31 Correct 19 ms 94192 KB Output is correct
32 Correct 9 ms 94192 KB Output is correct
33 Correct 13 ms 94192 KB Output is correct
34 Correct 13 ms 94192 KB Output is correct
35 Correct 26 ms 94192 KB Output is correct
36 Correct 16 ms 94192 KB Output is correct
37 Correct 16 ms 94192 KB Output is correct
38 Correct 6 ms 94192 KB Output is correct
39 Correct 13 ms 94192 KB Output is correct
40 Correct 19 ms 94192 KB Output is correct
41 Correct 16 ms 94192 KB Output is correct
42 Correct 13 ms 94192 KB Output is correct
43 Correct 23 ms 94196 KB Output is correct
44 Correct 16 ms 94196 KB Output is correct
45 Correct 153 ms 94948 KB Output is correct
46 Correct 163 ms 95796 KB Output is correct
47 Correct 163 ms 94384 KB Output is correct
48 Correct 169 ms 95768 KB Output is correct
49 Correct 173 ms 94508 KB Output is correct
50 Correct 156 ms 95568 KB Output is correct
51 Correct 163 ms 95528 KB Output is correct
52 Correct 106 ms 94192 KB Output is correct
53 Correct 153 ms 94192 KB Output is correct
54 Correct 139 ms 100320 KB Output is correct
55 Correct 133 ms 97188 KB Output is correct
56 Correct 153 ms 97196 KB Output is correct
57 Correct 113 ms 94192 KB Output is correct
58 Correct 133 ms 94192 KB Output is correct
59 Correct 129 ms 94192 KB Output is correct
60 Correct 136 ms 94192 KB Output is correct
61 Correct 163 ms 94192 KB Output is correct
62 Correct 123 ms 94192 KB Output is correct
63 Correct 149 ms 94192 KB Output is correct
64 Correct 159 ms 94192 KB Output is correct
65 Correct 219 ms 100320 KB Output is correct
66 Correct 226 ms 100312 KB Output is correct
67 Correct 156 ms 97184 KB Output is correct
68 Correct 176 ms 97184 KB Output is correct
69 Correct 153 ms 96852 KB Output is correct
70 Correct 153 ms 96836 KB Output is correct
71 Correct 133 ms 100316 KB Output is correct
72 Correct 149 ms 100312 KB Output is correct
73 Correct 146 ms 98232 KB Output is correct
74 Correct 146 ms 98232 KB Output is correct
75 Correct 109 ms 97788 KB Output is correct
76 Correct 106 ms 100320 KB Output is correct
77 Correct 109 ms 100316 KB Output is correct
78 Correct 153 ms 95600 KB Output is correct
79 Correct 159 ms 95004 KB Output is correct
80 Correct 1819 ms 97928 KB Output is correct
81 Correct 1799 ms 97168 KB Output is correct
82 Correct 1803 ms 94656 KB Output is correct
83 Correct 1819 ms 97260 KB Output is correct
84 Correct 1839 ms 97952 KB Output is correct
85 Correct 1779 ms 95148 KB Output is correct
86 Correct 1833 ms 97304 KB Output is correct
87 Correct 1206 ms 94192 KB Output is correct
88 Correct 1909 ms 94192 KB Output is correct
89 Correct 1759 ms 156564 KB Output is correct
90 Correct 1806 ms 125320 KB Output is correct
91 Correct 1766 ms 125320 KB Output is correct
92 Correct 1246 ms 94192 KB Output is correct
93 Correct 1236 ms 94192 KB Output is correct
94 Correct 1679 ms 94192 KB Output is correct
95 Correct 1729 ms 94192 KB Output is correct
96 Correct 1783 ms 94192 KB Output is correct
97 Correct 1686 ms 94192 KB Output is correct
98 Correct 1753 ms 94192 KB Output is correct
99 Correct 1766 ms 94192 KB Output is correct
100 Correct 2783 ms 156564 KB Output is correct
101 Correct 2766 ms 156568 KB Output is correct
102 Correct 1943 ms 125336 KB Output is correct
103 Correct 1946 ms 125288 KB Output is correct
104 Correct 1936 ms 121840 KB Output is correct
105 Correct 2016 ms 121844 KB Output is correct
106 Correct 1866 ms 156568 KB Output is correct
107 Correct 1979 ms 156564 KB Output is correct
108 Correct 1909 ms 135732 KB Output is correct
109 Correct 1889 ms 135736 KB Output is correct
110 Correct 1286 ms 155296 KB Output is correct
111 Correct 1289 ms 156568 KB Output is correct
112 Correct 1259 ms 156564 KB Output is correct
113 Correct 1816 ms 94636 KB Output is correct
114 Correct 1853 ms 97092 KB Output is correct