oj.uz

Submission #638726

# Submission time Handle Problem Language Result Execution time Memory
638726 2022-09-07T07:30:06 Z jamezzz Let's Win the Election (JOI22_ho_t3) C++17
61 / 100
 2500 ms 4296 KB 
#include <bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define sf scanf
#define pf printf
typedef long long ll;
typedef long double ld;
typedef pair<int,int> ii;
 
#define maxn 505
#define INF 1023456789
 
int n,k,a[maxn],b[maxn];
vector<ii> v;
ld memo[maxn][maxn];
 
int main(){
	sf("%d%d",&n,&k);
	for(int i=0;i<n;++i){
		int x,y;
		sf("%d%d",&x,&y);
		if(y==-1)y=INF;
		v.push_back({x,y});
	}
	sort(v.begin(),v.end(),[](ii &a,ii &b){
		if(a.se==b.se)return a.fi>b.fi;
		else return a.se<b.se;
	});
	int cnt=0;
	for(int i=0;i<n;++i){
		tie(a[i],b[i])=v[i];
		if(b[i]!=INF)++cnt;
	}
	ld ans=INF;
	for(int take=0;take<=cnt;++take){
		for(int i=0;i<=n+1;++i){
			for(int j=0;j<=n+1;++j){
				memo[i][j]=INF;
			}
		}
		memo[0][0]=0;
		for(int pos=0;pos<n;++pos){
			for(int ppl=take;ppl>=0;--ppl){
				for(int vote=pos+1;vote>=0;--vote){
					ld ans=memo[ppl][vote];
					if(vote!=0)ans=min(ans,memo[ppl][vote-1]+(ld)a[pos]/(take+1));
					if(vote!=0&&ppl!=0&&b[pos]!=INF){
						ans=min(ans,memo[ppl-1][vote-1]+(ld)b[pos]/ppl);
					}
					memo[ppl][vote]=ans;
				}
			}
		}
		ans=min(ans,memo[take][k]);
	}
	pf("%.15Lf\n",ans);
}

/*
7
5
393 646
375 666
374 676
320 635
288 668
284 758
333 702

1258.500000000000000
*/

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:20:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |  sf("%d%d",&n,&k);
      |    ^
Main.cpp:23:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |   sf("%d%d",&x,&y);
      |     ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 280 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 4 ms 4180 KB Output is correct
6 Correct 6 ms 4268 KB Output is correct
7 Correct 4 ms 4180 KB Output is correct
8 Correct 5 ms 4180 KB Output is correct
9 Correct 5 ms 4160 KB Output is correct
10 Correct 4 ms 4180 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 280 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 4 ms 4180 KB Output is correct
6 Correct 6 ms 4268 KB Output is correct
7 Correct 4 ms 4180 KB Output is correct
8 Correct 5 ms 4180 KB Output is correct
9 Correct 5 ms 4160 KB Output is correct
10 Correct 4 ms 4180 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Execution timed out 2572 ms 4180 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 308 KB Output is correct
22 Correct 1 ms 308 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 308 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 316 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 308 KB Output is correct
22 Correct 1 ms 308 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 308 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 316 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 204 ms 872 KB Output is correct
42 Correct 124 ms 876 KB Output is correct
43 Correct 196 ms 872 KB Output is correct
44 Correct 115 ms 852 KB Output is correct
45 Correct 204 ms 880 KB Output is correct
46 Correct 146 ms 872 KB Output is correct
47 Correct 197 ms 972 KB Output is correct
48 Correct 104 ms 888 KB Output is correct
49 Correct 225 ms 828 KB Output is correct
50 Correct 108 ms 876 KB Output is correct
51 Correct 186 ms 876 KB Output is correct
52 Correct 120 ms 872 KB Output is correct
53 Correct 240 ms 876 KB Output is correct
54 Correct 193 ms 872 KB Output is correct
55 Correct 190 ms 880 KB Output is correct
56 Correct 237 ms 876 KB Output is correct
57 Correct 196 ms 876 KB Output is correct
58 Correct 188 ms 888 KB Output is correct
59 Correct 198 ms 852 KB Output is correct
60 Correct 193 ms 852 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2567 ms 4296 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 280 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 4 ms 4180 KB Output is correct
6 Correct 6 ms 4268 KB Output is correct
7 Correct 4 ms 4180 KB Output is correct
8 Correct 5 ms 4180 KB Output is correct
9 Correct 5 ms 4160 KB Output is correct
10 Correct 4 ms 4180 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Execution timed out 2572 ms 4180 KB Time limit exceeded
13 Halted 0 ms 0 KB -