답안 #20848 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
20848	2017-02-26T07:54:16 Z	sgc109	초음속철도 (OJUZ11_rail)	C++11	100 / 100	1749 ms	64552 KB

rail

// #include <bits/stdc++.h>
#include <unordered_set>
// #include <unordered_map>
#include <vector>
#include <cstdio>
#include <iostream>
#include <cstring>
#include <queue>
#include <set>
#include <map>
// #include <cmath>
#include <algorithm>
#include <utility>
#include <string>
#define REP(i,a,b) for(int i=a;i<=b;++i)
#define FOR(i,n) for(int i=0;i<n;++i)
#define pb push_back
#define all(v) (v).begin(),(v).end()
#define sz(v) ((int)(v).size())
#define inp1(a) scanf("%d",&a)
#define inp2(a,b) scanf("%d%d",&a,&b)
#define inp3(a,b,c) scanf("%d%d%d",&a,&b,&c)
#define inp4(a,b,c,d) scanf("%d%d%d%d",&a,&b,&c,&d)
#define inp5(a,b,c,d,e) scanf("%d%d%d%d%d",&a,&b,&c,&d,&e)z
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef pair<int,int> pii;
typedef vector<pii> vii;
typedef vector<pll> vll;
typedef vector<vector<int> > vvi;
typedef pair<int,pair<int,int> > piii;
typedef vector<piii> viii;
const int MOD = 1000000007;
const int INF = 0x3c3c3c3c;
const long long INFL = 0x3c3c3c3c3c3c3c3c;
const int MAX_N = 102;

struct Range{
	int l,r;
	bool operator<(Range& rhs){
		if(l==rhs.l) return r<rhs.r;
		return l<rhs.l;
	}
};
int N,M,a,b,E;
Range ranges[200003];
ll dp[3610003];
int lz[3610003];
ll pow2(ll x, int n){
	if(!n) return 1;
	ll memo;
	if(n%2) {
		memo = pow2(x,(n-1)/2);
		return x*memo%MOD*memo%MOD;
	}
	memo = pow2(x,n/2);
	return memo*memo%MOD;
}
unordered_set<int> us;
ll query(int nl, int nr, int l, int r, int nd){
	if(lz[nd]) (dp[nd]*=pow2(2,lz[nd]))%=MOD,(nl!=nr?lz[2*nd]+=lz[nd],lz[2*nd+1]+=lz[nd]:0),lz[nd]=0;
	if(l<=nl&&nr<=r) return dp[nd];
	if(r<nl||nr<l) return 0;
	return (query(nl,(nl+nr)/2,l,r,2*nd)+query((nl+nr)/2+1,nr,l,r,2*nd+1))%MOD;
} ll query(int l, int r){return query(0,E,l,r,1);}

void update(int nl, int nr, int l, int r, int nd){
	if(lz[nd]) (dp[nd]*=pow2(2,lz[nd]))%=MOD,(nl!=nr?lz[2*nd]+=lz[nd],lz[2*nd+1]+=lz[nd]:0),lz[nd]=0;
	if(l<=nl&&nr<=r) {(dp[nd]*=2)%=MOD,(nl!=nr?lz[2*nd]++,lz[2*nd+1]++:0);return;}
	if(r<nl||nr<l) return;
	update(nl,(nl+nr)/2,l,r,2*nd),update((nl+nr)/2+1,nr,l,r,2*nd+1),dp[nd]=(dp[2*nd]+dp[2*nd+1])%MOD;
} void update(int l, int r){update(0,E,l,r,1);}

void pUpdate(int nl, int nr, int nd, int pos, ll val){
	if(lz[nd]) (dp[nd]*=pow2(2,lz[nd]))%=MOD,(nl!=nr?lz[2*nd]+=lz[nd],lz[2*nd+1]+=lz[nd]:0),lz[nd]=0;
	if(nl==nr&&nl==pos) {dp[nd]=val;return;}
	if(nr<pos||pos<nl) return;
	pUpdate(nl,(nl+nr)/2,2*nd,pos,val),pUpdate((nl+nr)/2+1,nr,2*nd+1,pos,val),dp[nd]=(dp[2*nd]+dp[2*nd+1])%MOD;
} void pUpdate(int pos, ll val){pUpdate(0,E,1,pos,val);}

int main() {
	vi sorted;
	inp2(N,M);
	us.insert(1),sorted.pb(1);
	us.insert(N),sorted.pb(N);
	FOR(i,M){
		inp2(a,b);
		ranges[i]=Range{a,b};
		if(!us.count(a)) us.insert(a),sorted.pb(a);
		if(!us.count(b)) us.insert(b),sorted.pb(b);
	}
	sort(all(sorted));
	E=sz(sorted)-1;
	FOR(i,M) {
		ranges[i].l=lower_bound(all(sorted),ranges[i].l)-sorted.begin();
		ranges[i].r=lower_bound(all(sorted),ranges[i].r)-sorted.begin();
	}
	sort(ranges,ranges+M);
	// 좌표압축 + 정렬까지 완료

	pUpdate(0,1);
	FOR(i,M){
		pUpdate(ranges[i].r,(query(ranges[i].l,ranges[i].r)+query(ranges[i].r,ranges[i].r))%MOD);
		update(ranges[i].r+1,E);
	}
	printf("%lld",query(E,E));
	return 0;
}

Compilation message

rail.cpp: In function 'int main()':
rail.cpp:86:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  inp2(N,M);
           ^
rail.cpp:90:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   inp2(a,b);
            ^

Subtask #1
10.0 / 10.0

#	결과	메모리	Grader output
1	Correct	45900 KB	Output is correct
2	Correct	45900 KB	Output is correct
3	Correct	45900 KB	Output is correct
4	Correct	45900 KB	Output is correct
5	Correct	45900 KB	Output is correct
6	Correct	45900 KB	Output is correct
7	Correct	45900 KB	Output is correct
8	Correct	45900 KB	Output is correct
9	Correct	45900 KB	Output is correct
10	Correct	45900 KB	Output is correct
11	Correct	45900 KB	Output is correct
12	Correct	45900 KB	Output is correct
13	Correct	45900 KB	Output is correct
14	Correct	45900 KB	Output is correct
15	Correct	45900 KB	Output is correct
16	Correct	45900 KB	Output is correct
17	Correct	45900 KB	Output is correct
18	Correct	45900 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	메모리	Grader output
1	Correct	45900 KB	Output is correct
2	Correct	45900 KB	Output is correct
3	Correct	45900 KB	Output is correct
4	Correct	45900 KB	Output is correct
5	Correct	45900 KB	Output is correct
6	Correct	45900 KB	Output is correct
7	Correct	45900 KB	Output is correct
8	Correct	45900 KB	Output is correct
9	Correct	45900 KB	Output is correct
10	Correct	45900 KB	Output is correct
11	Correct	45900 KB	Output is correct
12	Correct	45900 KB	Output is correct
13	Correct	45900 KB	Output is correct
14	Correct	45900 KB	Output is correct
15	Correct	45900 KB	Output is correct
16	Correct	45900 KB	Output is correct
17	Correct	45900 KB	Output is correct
18	Correct	45900 KB	Output is correct
19	Correct	45900 KB	Output is correct
20	Correct	45900 KB	Output is correct
21	Correct	45900 KB	Output is correct
22	Correct	45900 KB	Output is correct
23	Correct	45900 KB	Output is correct
24	Correct	45900 KB	Output is correct
25	Correct	45900 KB	Output is correct
26	Correct	45900 KB	Output is correct
27	Correct	45900 KB	Output is correct
28	Correct	45900 KB	Output is correct
29	Correct	45900 KB	Output is correct
30	Correct	45900 KB	Output is correct
31	Correct	45900 KB	Output is correct
32	Correct	45900 KB	Output is correct
33	Correct	45900 KB	Output is correct
34	Correct	45900 KB	Output is correct
35	Correct	45900 KB	Output is correct

Subtask #3
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	45900 KB	Output is correct
2	Correct	0 ms	45900 KB	Output is correct
3	Correct	0 ms	45900 KB	Output is correct
4	Correct	6 ms	46036 KB	Output is correct
5	Correct	323 ms	48356 KB	Output is correct
6	Correct	793 ms	63496 KB	Output is correct
7	Correct	726 ms	63364 KB	Output is correct
8	Correct	0 ms	45900 KB	Output is correct
9	Correct	769 ms	62572 KB	Output is correct
10	Correct	779 ms	63232 KB	Output is correct
11	Correct	196 ms	47828 KB	Output is correct
12	Correct	796 ms	63496 KB	Output is correct
13	Correct	793 ms	63232 KB	Output is correct
14	Correct	86 ms	45900 KB	Output is correct
15	Correct	653 ms	55260 KB	Output is correct
16	Correct	83 ms	45900 KB	Output is correct
17	Correct	803 ms	63496 KB	Output is correct
18	Correct	793 ms	63496 KB	Output is correct
19	Correct	803 ms	61912 KB	Output is correct

Subtask #4
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	45900 KB	Output is correct
2	Correct	0 ms	45900 KB	Output is correct
3	Correct	0 ms	45900 KB	Output is correct
4	Correct	0 ms	45900 KB	Output is correct
5	Correct	0 ms	45900 KB	Output is correct
6	Correct	0 ms	45900 KB	Output is correct
7	Correct	0 ms	45900 KB	Output is correct
8	Correct	0 ms	45900 KB	Output is correct
9	Correct	0 ms	45900 KB	Output is correct
10	Correct	0 ms	45900 KB	Output is correct
11	Correct	0 ms	45900 KB	Output is correct
12	Correct	0 ms	45900 KB	Output is correct
13	Correct	0 ms	45900 KB	Output is correct
14	Correct	0 ms	45900 KB	Output is correct
15	Correct	0 ms	45900 KB	Output is correct
16	Correct	0 ms	45900 KB	Output is correct
17	Correct	0 ms	45900 KB	Output is correct
18	Correct	0 ms	45900 KB	Output is correct
19	Correct	0 ms	45900 KB	Output is correct
20	Correct	0 ms	45900 KB	Output is correct
21	Correct	0 ms	45900 KB	Output is correct
22	Correct	0 ms	45900 KB	Output is correct
23	Correct	0 ms	45900 KB	Output is correct
24	Correct	0 ms	45900 KB	Output is correct
25	Correct	0 ms	45900 KB	Output is correct
26	Correct	0 ms	45900 KB	Output is correct
27	Correct	0 ms	45900 KB	Output is correct
28	Correct	0 ms	45900 KB	Output is correct
29	Correct	0 ms	45900 KB	Output is correct
30	Correct	0 ms	45900 KB	Output is correct
31	Correct	0 ms	45900 KB	Output is correct
32	Correct	0 ms	45900 KB	Output is correct
33	Correct	0 ms	45900 KB	Output is correct
34	Correct	0 ms	45900 KB	Output is correct
35	Correct	0 ms	45900 KB	Output is correct
36	Correct	19 ms	46420 KB	Output is correct
37	Correct	16 ms	46420 KB	Output is correct
38	Correct	9 ms	46036 KB	Output is correct
39	Correct	0 ms	45900 KB	Output is correct
40	Correct	9 ms	46196 KB	Output is correct
41	Correct	19 ms	46420 KB	Output is correct
42	Correct	19 ms	46420 KB	Output is correct
43	Correct	0 ms	45900 KB	Output is correct
44	Correct	13 ms	46196 KB	Output is correct
45	Correct	0 ms	45900 KB	Output is correct
46	Correct	6 ms	46196 KB	Output is correct
47	Correct	13 ms	46196 KB	Output is correct
48	Correct	13 ms	46196 KB	Output is correct
49	Correct	3 ms	45900 KB	Output is correct
50	Correct	3 ms	45900 KB	Output is correct
51	Correct	3 ms	45900 KB	Output is correct
52	Correct	3 ms	46036 KB	Output is correct
53	Correct	19 ms	46420 KB	Output is correct
54	Correct	6 ms	46036 KB	Output is correct
55	Correct	19 ms	46420 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	45900 KB	Output is correct
2	Correct	0 ms	45900 KB	Output is correct
3	Correct	0 ms	45900 KB	Output is correct
4	Correct	0 ms	45900 KB	Output is correct
5	Correct	0 ms	45900 KB	Output is correct
6	Correct	0 ms	45900 KB	Output is correct
7	Correct	0 ms	45900 KB	Output is correct
8	Correct	0 ms	45900 KB	Output is correct
9	Correct	0 ms	45900 KB	Output is correct
10	Correct	0 ms	45900 KB	Output is correct
11	Correct	0 ms	45900 KB	Output is correct
12	Correct	0 ms	45900 KB	Output is correct
13	Correct	0 ms	45900 KB	Output is correct
14	Correct	0 ms	45900 KB	Output is correct
15	Correct	0 ms	45900 KB	Output is correct
16	Correct	0 ms	45900 KB	Output is correct
17	Correct	0 ms	45900 KB	Output is correct
18	Correct	0 ms	45900 KB	Output is correct
19	Correct	0 ms	45900 KB	Output is correct
20	Correct	0 ms	45900 KB	Output is correct
21	Correct	0 ms	45900 KB	Output is correct
22	Correct	0 ms	45900 KB	Output is correct
23	Correct	0 ms	45900 KB	Output is correct
24	Correct	0 ms	45900 KB	Output is correct
25	Correct	0 ms	45900 KB	Output is correct
26	Correct	0 ms	45900 KB	Output is correct
27	Correct	0 ms	45900 KB	Output is correct
28	Correct	0 ms	45900 KB	Output is correct
29	Correct	0 ms	45900 KB	Output is correct
30	Correct	0 ms	45900 KB	Output is correct
31	Correct	0 ms	45900 KB	Output is correct
32	Correct	0 ms	45900 KB	Output is correct
33	Correct	0 ms	45900 KB	Output is correct
34	Correct	0 ms	45900 KB	Output is correct
35	Correct	0 ms	45900 KB	Output is correct
36	Correct	0 ms	45900 KB	Output is correct
37	Correct	0 ms	45900 KB	Output is correct
38	Correct	0 ms	45900 KB	Output is correct
39	Correct	6 ms	46036 KB	Output is correct
40	Correct	323 ms	48356 KB	Output is correct
41	Correct	793 ms	63496 KB	Output is correct
42	Correct	726 ms	63364 KB	Output is correct
43	Correct	0 ms	45900 KB	Output is correct
44	Correct	769 ms	62572 KB	Output is correct
45	Correct	779 ms	63232 KB	Output is correct
46	Correct	196 ms	47828 KB	Output is correct
47	Correct	796 ms	63496 KB	Output is correct
48	Correct	793 ms	63232 KB	Output is correct
49	Correct	86 ms	45900 KB	Output is correct
50	Correct	653 ms	55260 KB	Output is correct
51	Correct	83 ms	45900 KB	Output is correct
52	Correct	803 ms	63496 KB	Output is correct
53	Correct	793 ms	63496 KB	Output is correct
54	Correct	803 ms	61912 KB	Output is correct
55	Correct	19 ms	46420 KB	Output is correct
56	Correct	16 ms	46420 KB	Output is correct
57	Correct	9 ms	46036 KB	Output is correct
58	Correct	0 ms	45900 KB	Output is correct
59	Correct	9 ms	46196 KB	Output is correct
60	Correct	19 ms	46420 KB	Output is correct
61	Correct	19 ms	46420 KB	Output is correct
62	Correct	0 ms	45900 KB	Output is correct
63	Correct	13 ms	46196 KB	Output is correct
64	Correct	0 ms	45900 KB	Output is correct
65	Correct	6 ms	46196 KB	Output is correct
66	Correct	13 ms	46196 KB	Output is correct
67	Correct	13 ms	46196 KB	Output is correct
68	Correct	3 ms	45900 KB	Output is correct
69	Correct	3 ms	45900 KB	Output is correct
70	Correct	3 ms	45900 KB	Output is correct
71	Correct	3 ms	46036 KB	Output is correct
72	Correct	19 ms	46420 KB	Output is correct
73	Correct	6 ms	46036 KB	Output is correct
74	Correct	19 ms	46420 KB	Output is correct
75	Correct	1639 ms	64552 KB	Output is correct
76	Correct	976 ms	61044 KB	Output is correct
77	Correct	446 ms	46036 KB	Output is correct
78	Correct	59 ms	45900 KB	Output is correct
79	Correct	876 ms	49772 KB	Output is correct
80	Correct	1716 ms	64552 KB	Output is correct
81	Correct	16 ms	46196 KB	Output is correct
82	Correct	1476 ms	63100 KB	Output is correct
83	Correct	59 ms	45900 KB	Output is correct
84	Correct	1153 ms	61384 KB	Output is correct
85	Correct	1008 ms	55128 KB	Output is correct
86	Correct	1026 ms	55260 KB	Output is correct
87	Correct	173 ms	45900 KB	Output is correct
88	Correct	146 ms	45900 KB	Output is correct
89	Correct	1696 ms	64552 KB	Output is correct
90	Correct	1679 ms	64552 KB	Output is correct
91	Correct	1749 ms	64552 KB	Output is correct
92	Correct	1536 ms	64156 KB	Output is correct
93	Correct	1066 ms	55128 KB	Output is correct
94	Correct	1683 ms	64552 KB	Output is correct
95	Correct	1706 ms	64552 KB	Output is correct

답안 #20848

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 8.0 / 8.0

Subtask #3 25.0 / 25.0

Subtask #4 27.0 / 27.0

Subtask #5 30.0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
8.0 / 8.0

Subtask #3
25.0 / 25.0

Subtask #4
27.0 / 27.0

Subtask #5
30.0 / 30.0