oj.uz

Submission #833231

# Submission time Handle Problem Language Result Execution time Memory
833231 2023-08-22T03:27:10 Z josanneo22 Feast (NOI19_feast) C++17
41 / 100
 236 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ld long double
#define mp make_pair
#define pb push_back
#define pii pair<int,int>
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define ar array

const int inf=1e15;
void solve(){
	int n,k; cin>>n>>k;
	vector<int> a(n+1); for(int i=1;i<=n;i++) cin>>a[i];
	vector<vector<vector<int>>> dp(n+1,vector<vector<int>>(n+1,vector<int>(2,-inf)));
	dp[0][0][0]=0; dp[0][0][1]=0; int ans=0;
	for(int i=1;i<=n;i++){
		dp[i][0][0]=0;
		for(int j=1;j<=n;j++){
			dp[i][j][0]=max(dp[i-1][j][0],dp[i-1][j][1]);
			dp[i][j][1]=max(dp[i-1][j][1],dp[i-1][j-1][0])+a[i];
			if(j<=k) ans=max(ans,max(dp[i][j][0],dp[i][j][1]));
		}
	}
	cout<<ans<<'\n';
}

signed main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	clock_t tStart = clock();
	int local=0,multi=0,debug=1,tt=1;
	if(local){
	    freopen("input.txt","r",stdin);
	    freopen("output.txt","w",stdout);
	}	
	if(multi) cin>>tt;
	for(int i=1;i<=tt;i++){
		if(debug && multi && local) cout<<"样例 "<<i<<'\n';
		solve();
 	}
	fprintf(stderr, "\n>> Runtime: %.10fs\n", (double) (clock() - tStart) / CLOCKS_PER_SEC);
}

Compilation message

feast.cpp: In function 'int main()':
feast.cpp:35:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |      freopen("input.txt","r",stdin);
      |      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
feast.cpp:36:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |      freopen("output.txt","w",stdout);
      |      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 203 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Runtime error 183 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Runtime error 188 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 596 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 596 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 596 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 5 ms 5076 KB Output is correct
12 Correct 4 ms 3924 KB Output is correct
13 Correct 3 ms 4052 KB Output is correct
14 Correct 4 ms 4532 KB Output is correct
15 Correct 4 ms 4308 KB Output is correct
16 Correct 3 ms 3924 KB Output is correct
17 Correct 4 ms 4564 KB Output is correct
18 Correct 4 ms 4436 KB Output is correct
19 Correct 4 ms 4308 KB Output is correct
20 Correct 5 ms 5076 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 596 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 5 ms 5076 KB Output is correct
12 Correct 4 ms 3924 KB Output is correct
13 Correct 3 ms 4052 KB Output is correct
14 Correct 4 ms 4532 KB Output is correct
15 Correct 4 ms 4308 KB Output is correct
16 Correct 3 ms 3924 KB Output is correct
17 Correct 4 ms 4564 KB Output is correct
18 Correct 4 ms 4436 KB Output is correct
19 Correct 4 ms 4308 KB Output is correct
20 Correct 5 ms 5076 KB Output is correct
21 Correct 192 ms 207308 KB Output is correct
22 Correct 189 ms 204968 KB Output is correct
23 Correct 190 ms 208332 KB Output is correct
24 Correct 188 ms 207588 KB Output is correct
25 Correct 236 ms 219912 KB Output is correct
26 Correct 200 ms 218060 KB Output is correct
27 Correct 207 ms 218596 KB Output is correct
28 Correct 196 ms 217520 KB Output is correct
29 Correct 202 ms 213608 KB Output is correct
30 Correct 186 ms 206216 KB Output is correct

Subtask #7
0 / 29.0

# Verdict Execution time Memory Grader output
1 Runtime error 203 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -