oj.uz

Submission #638728

# Submission time Handle Problem Language Result Execution time Memory
638728 2022-09-07T07:44:07 Z jamezzz Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 513 ms 332 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];
 
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({y,x});
	}
	sort(v.begin(),v.end());
	int cnt=0;
	for(int i=0;i<n;++i){
		tie(b[i],a[i])=v[i];
		if(b[i]!=INF)++cnt;
	}
	ld ans=INF;
	for(int take=0;take<=min(k,cnt);++take){
		for(int i=0;i<=n+1;++i){
			memo[i]=INF;
		}
		memo[0]=0;
		for(int pos=0;pos<n;++pos){
			for(int vote=k-take;vote>=0;--vote){
				ld ans=INF;
				//case 1: take this
				if(vote!=0)ans=min(ans,memo[vote-1]+(ld)a[pos]/(take+1));
				//case 2: don't take this
				//if this is one of the collaborators, add cost
				if(pos-vote<take){
					ans=min(ans,memo[vote]+(ld)b[pos]/(pos-vote+1));
				}
				else ans=min(ans,memo[vote]);
				memo[vote]=ans;
			}
		}
		ans=min(ans,memo[k-take]);
	}
	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 212 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 3 ms 312 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #2
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 212 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 3 ms 312 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 39 ms 212 KB Output is correct
13 Correct 38 ms 300 KB Output is correct
14 Correct 37 ms 308 KB Output is correct
15 Correct 222 ms 212 KB Output is correct
16 Correct 220 ms 212 KB Output is correct
17 Correct 107 ms 296 KB Output is correct
18 Correct 442 ms 212 KB Output is correct
19 Correct 383 ms 292 KB Output is correct
20 Correct 146 ms 296 KB Output is correct

Subtask #3
11.0 / 11.0

# 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 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct

Subtask #4
12.0 / 12.0

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

Subtask #5
33.0 / 33.0

# 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 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 1 ms 212 KB Output is correct
45 Correct 2 ms 212 KB Output is correct
46 Correct 2 ms 212 KB Output is correct
47 Correct 3 ms 212 KB Output is correct
48 Correct 2 ms 212 KB Output is correct
49 Correct 3 ms 212 KB Output is correct
50 Correct 3 ms 212 KB Output is correct
51 Correct 5 ms 212 KB Output is correct
52 Correct 4 ms 304 KB Output is correct
53 Correct 2 ms 212 KB Output is correct
54 Correct 2 ms 212 KB Output is correct
55 Correct 2 ms 212 KB Output is correct
56 Correct 2 ms 308 KB Output is correct
57 Correct 2 ms 212 KB Output is correct
58 Correct 2 ms 212 KB Output is correct
59 Correct 3 ms 212 KB Output is correct
60 Correct 2 ms 212 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 438 ms 296 KB Output is correct
2 Correct 471 ms 212 KB Output is correct
3 Correct 445 ms 332 KB Output is correct
4 Correct 446 ms 300 KB Output is correct
5 Correct 513 ms 332 KB Output is correct
6 Correct 440 ms 332 KB Output is correct
7 Correct 466 ms 304 KB Output is correct

Subtask #7
23.0 / 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 212 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 3 ms 312 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 39 ms 212 KB Output is correct
13 Correct 38 ms 300 KB Output is correct
14 Correct 37 ms 308 KB Output is correct
15 Correct 222 ms 212 KB Output is correct
16 Correct 220 ms 212 KB Output is correct
17 Correct 107 ms 296 KB Output is correct
18 Correct 442 ms 212 KB Output is correct
19 Correct 383 ms 292 KB Output is correct
20 Correct 146 ms 296 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 1 ms 212 KB Output is correct
45 Correct 1 ms 212 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 0 ms 212 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Correct 0 ms 212 KB Output is correct
55 Correct 0 ms 212 KB Output is correct
56 Correct 0 ms 212 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 0 ms 212 KB Output is correct
62 Correct 1 ms 256 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 2 ms 212 KB Output is correct
66 Correct 2 ms 212 KB Output is correct
67 Correct 3 ms 212 KB Output is correct
68 Correct 2 ms 212 KB Output is correct
69 Correct 3 ms 212 KB Output is correct
70 Correct 3 ms 212 KB Output is correct
71 Correct 5 ms 212 KB Output is correct
72 Correct 4 ms 304 KB Output is correct
73 Correct 2 ms 212 KB Output is correct
74 Correct 2 ms 212 KB Output is correct
75 Correct 2 ms 212 KB Output is correct
76 Correct 2 ms 308 KB Output is correct
77 Correct 2 ms 212 KB Output is correct
78 Correct 2 ms 212 KB Output is correct
79 Correct 3 ms 212 KB Output is correct
80 Correct 2 ms 212 KB Output is correct
81 Correct 438 ms 296 KB Output is correct
82 Correct 471 ms 212 KB Output is correct
83 Correct 445 ms 332 KB Output is correct
84 Correct 446 ms 300 KB Output is correct
85 Correct 513 ms 332 KB Output is correct
86 Correct 440 ms 332 KB Output is correct
87 Correct 466 ms 304 KB Output is correct
88 Correct 5 ms 212 KB Output is correct
89 Correct 6 ms 304 KB Output is correct
90 Correct 28 ms 212 KB Output is correct
91 Correct 30 ms 308 KB Output is correct
92 Correct 113 ms 212 KB Output is correct
93 Correct 130 ms 308 KB Output is correct
94 Correct 276 ms 296 KB Output is correct
95 Correct 249 ms 304 KB Output is correct
96 Correct 346 ms 300 KB Output is correct
97 Correct 384 ms 300 KB Output is correct
98 Correct 243 ms 296 KB Output is correct
99 Correct 214 ms 332 KB Output is correct
100 Correct 218 ms 300 KB Output is correct
101 Correct 263 ms 300 KB Output is correct
102 Correct 225 ms 300 KB Output is correct
103 Correct 216 ms 296 KB Output is correct
104 Correct 213 ms 316 KB Output is correct
105 Correct 272 ms 300 KB Output is correct