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Submission #163200

# Submission time Handle Problem Language Result Execution time Memory
163200 2019-11-11T18:04:22 Z TadijaSebez 스트랩 (JOI14_straps) C++11
100 / 100
 19 ms 504 KB 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int N=2050;
int dp[N];
int main()
{
	int n,a,b;
	scanf("%i",&n);
	for(int i=2;i<=n;i++) dp[i]=-1e9;
	vector<int> zero;
	int ans=0;
	for(int j=1;j<=n;j++)
	{
		scanf("%i %i",&a,&b);
		if(a==0) zero.pb(max(b,0));
		else if(a==1) ans+=max(0,b);
		else
		{
			for(int i=n;i>=a;i--) dp[i]=max(dp[i],dp[i-a+1]+b);
			for(int i=n-1;i>=1;i--) dp[i]=max(dp[i],dp[i+1]);
		}
	}
	sort(zero.rbegin(),zero.rend());
	int tmp=0,sol=0;
	for(int i=1;i<=n;i++)
	{
		if(zero.size()>=i) tmp+=zero[i-1];
		sol=max(sol,tmp+dp[i]);
	}
	printf("%i\n",ans+sol);
	return 0;
}

Compilation message

straps.cpp: In function 'int main()':
straps.cpp:28:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(zero.size()>=i) tmp+=zero[i-1];
      ~~~~~~~~~~~^~~
straps.cpp:9:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i",&n);
  ~~~~~^~~~~~~~~
straps.cpp:15:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%i %i",&a,&b);
   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 364 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 3 ms 256 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 252 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 296 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 4 ms 380 KB Output is correct
16 Correct 4 ms 376 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 4 ms 376 KB Output is correct
19 Correct 3 ms 376 KB Output is correct
20 Correct 3 ms 376 KB Output is correct
21 Correct 3 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 3 ms 376 KB Output is correct
24 Correct 3 ms 376 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 3 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 18 ms 380 KB Output is correct
30 Correct 17 ms 376 KB Output is correct
31 Correct 18 ms 376 KB Output is correct

Subtask #3
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 404 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 5 ms 504 KB Output is correct
21 Correct 5 ms 376 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 4 ms 376 KB Output is correct
24 Correct 4 ms 376 KB Output is correct
25 Correct 4 ms 372 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 3 ms 376 KB Output is correct
28 Correct 3 ms 376 KB Output is correct
29 Correct 3 ms 376 KB Output is correct
30 Correct 3 ms 376 KB Output is correct
31 Correct 3 ms 380 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 19 ms 376 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 3 ms 404 KB Output is correct
9 Correct 2 ms 380 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 3 ms 380 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 3 ms 380 KB Output is correct
17 Correct 3 ms 376 KB Output is correct
18 Correct 3 ms 376 KB Output is correct
19 Correct 17 ms 416 KB Output is correct
20 Correct 17 ms 376 KB Output is correct
21 Correct 18 ms 376 KB Output is correct
22 Correct 17 ms 376 KB Output is correct
23 Correct 17 ms 376 KB Output is correct
24 Correct 17 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct