Submission #159072

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
159072	2019-10-20T13:10:13 Z	dennisstar	None (KOI18_arrowH)	C++11	100 / 100	50 ms	5496 KB

arrow

#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;

int N;
vector<int> ar[100010];

int main()
{
	scanf("%d", &N);
	int a, b;
	int i, j;
	for (i=0; i<N; i++) {
		scanf("%d %d", &a, &b);
		ar[b].push_back(a);
	}
	ll ans=0;
	for (i=1; i<=N; i++) {
		sort(ar[i].begin(), ar[i].end());
		for (j=0; j<ar[i].size(); j++) {
			a=(j?ar[i][j-1]:-(1<<30));
			b=(j<ar[i].size()-1?ar[i][j+1]:-(1<<30));
			ans+=(ll)((a==b&&a==-(1<<30))?0:min(abs(ar[i][j]-a), abs(ar[i][j]-b)));
		}
	}
	printf("%lld", ans);
	return 0;
}

Compilation message

arrow.cpp: In function 'int main()':
arrow.cpp:25:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (j=0; j<ar[i].size(); j++) {
             ~^~~~~~~~~~~~~
arrow.cpp:27:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    b=(j<ar[i].size()-1?ar[i][j+1]:-(1<<30));
       ~^~~~~~~~~~~~~~~
arrow.cpp:15:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
arrow.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1

21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	2680 KB	Output is correct
2	Correct	4 ms	2680 KB	Output is correct
3	Correct	4 ms	2680 KB	Output is correct
4	Correct	4 ms	2680 KB	Output is correct
5	Correct	4 ms	2680 KB	Output is correct
6	Correct	4 ms	2680 KB	Output is correct
7	Correct	4 ms	2680 KB	Output is correct
8	Correct	4 ms	2680 KB	Output is correct

Subtask #2

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	2680 KB	Output is correct
2	Correct	4 ms	2680 KB	Output is correct
3	Correct	4 ms	2680 KB	Output is correct
4	Correct	4 ms	2680 KB	Output is correct
5	Correct	4 ms	2680 KB	Output is correct
6	Correct	4 ms	2680 KB	Output is correct
7	Correct	4 ms	2680 KB	Output is correct
8	Correct	4 ms	2680 KB	Output is correct
9	Correct	4 ms	2680 KB	Output is correct
10	Correct	4 ms	2680 KB	Output is correct
11	Correct	4 ms	2680 KB	Output is correct
12	Correct	4 ms	2680 KB	Output is correct
13	Correct	4 ms	2680 KB	Output is correct
14	Correct	4 ms	2680 KB	Output is correct
15	Correct	4 ms	2680 KB	Output is correct
16	Correct	5 ms	2680 KB	Output is correct

Subtask #3

29.0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	2680 KB	Output is correct
2	Correct	4 ms	2680 KB	Output is correct
3	Correct	4 ms	2680 KB	Output is correct
4	Correct	4 ms	2680 KB	Output is correct
5	Correct	4 ms	2680 KB	Output is correct
6	Correct	4 ms	2680 KB	Output is correct
7	Correct	4 ms	2680 KB	Output is correct
8	Correct	4 ms	2680 KB	Output is correct
9	Correct	4 ms	2680 KB	Output is correct
10	Correct	4 ms	2680 KB	Output is correct
11	Correct	4 ms	2680 KB	Output is correct
12	Correct	4 ms	2680 KB	Output is correct
13	Correct	4 ms	2680 KB	Output is correct
14	Correct	4 ms	2680 KB	Output is correct
15	Correct	4 ms	2680 KB	Output is correct
16	Correct	5 ms	2680 KB	Output is correct
17	Correct	7 ms	2884 KB	Output is correct
18	Correct	7 ms	2808 KB	Output is correct
19	Correct	7 ms	2780 KB	Output is correct
20	Correct	8 ms	2936 KB	Output is correct
21	Correct	7 ms	2812 KB	Output is correct
22	Correct	7 ms	2808 KB	Output is correct
23	Correct	8 ms	2936 KB	Output is correct
24	Correct	8 ms	2928 KB	Output is correct

Subtask #4

38.0 / 38.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	2680 KB	Output is correct
2	Correct	4 ms	2680 KB	Output is correct
3	Correct	4 ms	2680 KB	Output is correct
4	Correct	4 ms	2680 KB	Output is correct
5	Correct	4 ms	2680 KB	Output is correct
6	Correct	4 ms	2680 KB	Output is correct
7	Correct	4 ms	2680 KB	Output is correct
8	Correct	4 ms	2680 KB	Output is correct
9	Correct	4 ms	2680 KB	Output is correct
10	Correct	4 ms	2680 KB	Output is correct
11	Correct	4 ms	2680 KB	Output is correct
12	Correct	4 ms	2680 KB	Output is correct
13	Correct	4 ms	2680 KB	Output is correct
14	Correct	4 ms	2680 KB	Output is correct
15	Correct	4 ms	2680 KB	Output is correct
16	Correct	5 ms	2680 KB	Output is correct
17	Correct	7 ms	2884 KB	Output is correct
18	Correct	7 ms	2808 KB	Output is correct
19	Correct	7 ms	2780 KB	Output is correct
20	Correct	8 ms	2936 KB	Output is correct
21	Correct	7 ms	2812 KB	Output is correct
22	Correct	7 ms	2808 KB	Output is correct
23	Correct	8 ms	2936 KB	Output is correct
24	Correct	8 ms	2928 KB	Output is correct
25	Correct	50 ms	5496 KB	Output is correct
26	Correct	38 ms	4652 KB	Output is correct
27	Correct	46 ms	5116 KB	Output is correct
28	Correct	39 ms	4600 KB	Output is correct
29	Correct	44 ms	5056 KB	Output is correct
30	Correct	38 ms	4616 KB	Output is correct
31	Correct	38 ms	4600 KB	Output is correct
32	Correct	44 ms	5240 KB	Output is correct