답안 #68428 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
68428	2018-08-17T06:34:42 Z	gusfring	Boat (APIO16_boat)	C++14	31 / 100	2000 ms	525312 KB

boat

#include <bits/stdc++.h>

using namespace std;

const int MAXN = 505, MOD = 1e9 + 7;
typedef long long ll;
typedef pair<int, int> pii;
#define a first
#define b second

int N, A[MAXN], B[MAXN], T[1000505], bit[1000505], res, sum;
vector<pii> vec;

void update(int pos, int val){
	while(pos <= sum){
		bit[pos] = (bit[pos] + val) % MOD;
		pos += (pos & (-pos));
	}
}

int query(int pos){
	int r = 0;
	while(pos){
		r = (r + bit[pos]) % MOD;
		pos -= (pos & (-pos));
	}
	return r;
}

ll solve(){
	int cnt = 0;
	for(int i=1; i<=N; ++i)
		for(int j=B[i]; j>=A[i]; --j) vec.push_back({j, ++cnt});
	sort(vec.begin(), vec.end());
	T[vec[0].b] = 1, cnt = 1;
	for(int i=1; i<vec.size(); ++i){
		if(vec[i].a != vec[i - 1].a) cnt++;
		T[vec[i].b] = cnt;
	}
	for(int i=1; i<=sum; ++i){
		int r = (query(T[i] - 1) + 1) % MOD;
		update(T[i], r);
		res = (res + r) % MOD;
	}
	return res;
}
		
int main(){
	scanf("%d", &N);
	for(int i=1; i<=N; ++i){
		scanf("%d %d", &A[i], &B[i]);
		sum += B[i] - A[i] + 1;
	}
	printf("%lld\n", solve());
	return 0;
}

Compilation message

boat.cpp: In function 'll solve()':
boat.cpp:36:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1; i<vec.size(); ++i){
               ~^~~~~~~~~~~
boat.cpp: In function 'int main()':
boat.cpp:49:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
boat.cpp:51:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &A[i], &B[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	3 ms	504 KB	Output is correct
3	Correct	4 ms	504 KB	Output is correct
4	Correct	3 ms	520 KB	Output is correct
5	Correct	3 ms	596 KB	Output is correct
6	Correct	2 ms	608 KB	Output is correct
7	Correct	3 ms	620 KB	Output is correct
8	Correct	4 ms	688 KB	Output is correct
9	Correct	3 ms	828 KB	Output is correct
10	Correct	3 ms	828 KB	Output is correct
11	Correct	3 ms	828 KB	Output is correct
12	Correct	3 ms	896 KB	Output is correct
13	Correct	2 ms	896 KB	Output is correct
14	Correct	3 ms	896 KB	Output is correct
15	Correct	4 ms	896 KB	Output is correct
16	Correct	3 ms	904 KB	Output is correct
17	Correct	3 ms	916 KB	Output is correct
18	Correct	4 ms	984 KB	Output is correct
19	Correct	2 ms	996 KB	Output is correct
20	Correct	3 ms	1008 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	3 ms	504 KB	Output is correct
3	Correct	4 ms	504 KB	Output is correct
4	Correct	3 ms	520 KB	Output is correct
5	Correct	3 ms	596 KB	Output is correct
6	Correct	2 ms	608 KB	Output is correct
7	Correct	3 ms	620 KB	Output is correct
8	Correct	4 ms	688 KB	Output is correct
9	Correct	3 ms	828 KB	Output is correct
10	Correct	3 ms	828 KB	Output is correct
11	Correct	3 ms	828 KB	Output is correct
12	Correct	3 ms	896 KB	Output is correct
13	Correct	2 ms	896 KB	Output is correct
14	Correct	3 ms	896 KB	Output is correct
15	Correct	4 ms	896 KB	Output is correct
16	Correct	3 ms	904 KB	Output is correct
17	Correct	3 ms	916 KB	Output is correct
18	Correct	4 ms	984 KB	Output is correct
19	Correct	2 ms	996 KB	Output is correct
20	Correct	3 ms	1008 KB	Output is correct
21	Correct	223 ms	11484 KB	Output is correct
22	Correct	199 ms	11484 KB	Output is correct
23	Correct	198 ms	11484 KB	Output is correct
24	Correct	201 ms	11756 KB	Output is correct
25	Correct	273 ms	11844 KB	Output is correct
26	Correct	232 ms	12412 KB	Output is correct
27	Correct	241 ms	12676 KB	Output is correct
28	Correct	240 ms	12756 KB	Output is correct
29	Correct	270 ms	12836 KB	Output is correct
30	Correct	236 ms	16812 KB	Output is correct
31	Correct	220 ms	16812 KB	Output is correct
32	Correct	211 ms	16832 KB	Output is correct
33	Correct	209 ms	16832 KB	Output is correct
34	Correct	234 ms	16832 KB	Output is correct
35	Correct	171 ms	16832 KB	Output is correct
36	Correct	209 ms	16832 KB	Output is correct
37	Correct	190 ms	16832 KB	Output is correct
38	Correct	179 ms	16832 KB	Output is correct

Subtask #3
0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	2052 ms	525312 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #4
0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	3 ms	504 KB	Output is correct
3	Correct	4 ms	504 KB	Output is correct
4	Correct	3 ms	520 KB	Output is correct
5	Correct	3 ms	596 KB	Output is correct
6	Correct	2 ms	608 KB	Output is correct
7	Correct	3 ms	620 KB	Output is correct
8	Correct	4 ms	688 KB	Output is correct
9	Correct	3 ms	828 KB	Output is correct
10	Correct	3 ms	828 KB	Output is correct
11	Correct	3 ms	828 KB	Output is correct
12	Correct	3 ms	896 KB	Output is correct
13	Correct	2 ms	896 KB	Output is correct
14	Correct	3 ms	896 KB	Output is correct
15	Correct	4 ms	896 KB	Output is correct
16	Correct	3 ms	904 KB	Output is correct
17	Correct	3 ms	916 KB	Output is correct
18	Correct	4 ms	984 KB	Output is correct
19	Correct	2 ms	996 KB	Output is correct
20	Correct	3 ms	1008 KB	Output is correct
21	Correct	223 ms	11484 KB	Output is correct
22	Correct	199 ms	11484 KB	Output is correct
23	Correct	198 ms	11484 KB	Output is correct
24	Correct	201 ms	11756 KB	Output is correct
25	Correct	273 ms	11844 KB	Output is correct
26	Correct	232 ms	12412 KB	Output is correct
27	Correct	241 ms	12676 KB	Output is correct
28	Correct	240 ms	12756 KB	Output is correct
29	Correct	270 ms	12836 KB	Output is correct
30	Correct	236 ms	16812 KB	Output is correct
31	Correct	220 ms	16812 KB	Output is correct
32	Correct	211 ms	16832 KB	Output is correct
33	Correct	209 ms	16832 KB	Output is correct
34	Correct	234 ms	16832 KB	Output is correct
35	Correct	171 ms	16832 KB	Output is correct
36	Correct	209 ms	16832 KB	Output is correct
37	Correct	190 ms	16832 KB	Output is correct
38	Correct	179 ms	16832 KB	Output is correct
39	Execution timed out	2052 ms	525312 KB	Time limit exceeded
40	Halted	0 ms	0 KB	-

답안 #68428

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 22.0 / 22.0

Subtask #3 0 / 27.0

Subtask #4 0 / 42.0

Subtask #1
9.0 / 9.0

Subtask #2
22.0 / 22.0

Subtask #3
0 / 27.0

Subtask #4
0 / 42.0