oj.uz

Submission #531716

# Submission time Handle Problem Language Result Execution time Memory
531716 2022-03-01T10:21:17 Z errorgorn Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 386 ms 3444 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define ll long long
#define ii pair<ll,ll>
#define fi first
#define se second

#define puf push_front
#define pof pop_front
#define pub push_back
#define pob pop_back
#define lb lower_bound
#define ub upper_bound

#define rep(x,s,e) for (auto x=(s)-((s)>(e));x!=(e)-((s)>(e));((s)<(e))?x++:x--)
#define all(x) (x).begin(),(x).end()
#define sz(x) (int) (x).size()

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

int n,k;
ii arr[505];

int speed;
float memo[505][505];

float dp(int j,int k){ //we consider j A and k B
	if (j+k==0) return 0;
	if (memo[j][k]!=-1) return memo[j][k];
	
	float res=1e6;
	if (j) res=min(res,dp(j-1,k)+(float)arr[j+k].fi/speed);
	if (k) res=min(res,dp(j,k-1)+(float)arr[j+k].se/k);
	
	return memo[j][k]=res;
}

int best[505][505];

signed main(){
	cin.tie(0);
	cout.tie(0);
	cin.sync_with_stdio(false);
	
	cin>>n>>k;
	rep(x,1,n+1) cin>>arr[x].fi>>arr[x].se;
	
	int num=0;
	rep(x,1,n+1){
		if (arr[x].se!=-1) num++;
		else arr[x].se=1e9;
	}
	
	sort(arr+1,arr+n+1,[](ii i,ii j){
		return i.se<j.se;
	});
	
	vector<int> v;
	rep(x,n+1,1){
		v.pub(arr[x].fi);
		sort(all(v));
		
		int curr=0;
		rep(y,0,sz(v)){
			curr+=v[y];
			best[x][y+1]=curr;
		}
	}
	
	float ans=1e6;
	
	rep(x,0,min(num,k)+1){
		speed=x+1;
		
		rep(x,0,505) rep(y,0,505) memo[x][y]=-1;
		
		rep(y,x,k+1){
			ans=min(ans,dp(y-x,x)+(float)best[y+1][k-y]/speed);
		}
	}
	
	cout<<fixed<<setprecision(12)<<ans<<endl;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1228 KB Output is correct
2 Correct 2 ms 1220 KB Output is correct
3 Correct 1 ms 1228 KB Output is correct
4 Correct 1 ms 1228 KB Output is correct
5 Correct 5 ms 3268 KB Output is correct
6 Correct 5 ms 3272 KB Output is correct
7 Correct 5 ms 3200 KB Output is correct
8 Correct 5 ms 3276 KB Output is correct
9 Correct 5 ms 3276 KB Output is correct
10 Correct 3 ms 3276 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1228 KB Output is correct
2 Correct 2 ms 1220 KB Output is correct
3 Correct 1 ms 1228 KB Output is correct
4 Correct 1 ms 1228 KB Output is correct
5 Correct 5 ms 3268 KB Output is correct
6 Correct 5 ms 3272 KB Output is correct
7 Correct 5 ms 3200 KB Output is correct
8 Correct 5 ms 3276 KB Output is correct
9 Correct 5 ms 3276 KB Output is correct
10 Correct 3 ms 3276 KB Output is correct
11 Correct 1 ms 1336 KB Output is correct
12 Correct 36 ms 3300 KB Output is correct
13 Correct 41 ms 3300 KB Output is correct
14 Correct 21 ms 3272 KB Output is correct
15 Correct 158 ms 3316 KB Output is correct
16 Correct 108 ms 3316 KB Output is correct
17 Correct 30 ms 3264 KB Output is correct
18 Correct 335 ms 3308 KB Output is correct
19 Correct 187 ms 3312 KB Output is correct
20 Correct 47 ms 3324 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1356 KB Output is correct
2 Correct 1 ms 1356 KB Output is correct
3 Correct 1 ms 1356 KB Output is correct
4 Correct 1 ms 1356 KB Output is correct
5 Correct 2 ms 1408 KB Output is correct
6 Correct 2 ms 1356 KB Output is correct
7 Correct 3 ms 1348 KB Output is correct
8 Correct 3 ms 1356 KB Output is correct
9 Correct 2 ms 1352 KB Output is correct
10 Correct 2 ms 1356 KB Output is correct
11 Correct 2 ms 1356 KB Output is correct
12 Correct 2 ms 1260 KB Output is correct
13 Correct 2 ms 1356 KB Output is correct
14 Correct 2 ms 1228 KB Output is correct
15 Correct 2 ms 1356 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1356 KB Output is correct
2 Correct 1 ms 1356 KB Output is correct
3 Correct 1 ms 1356 KB Output is correct
4 Correct 1 ms 1356 KB Output is correct
5 Correct 2 ms 1408 KB Output is correct
6 Correct 2 ms 1356 KB Output is correct
7 Correct 3 ms 1348 KB Output is correct
8 Correct 3 ms 1356 KB Output is correct
9 Correct 2 ms 1352 KB Output is correct
10 Correct 2 ms 1356 KB Output is correct
11 Correct 2 ms 1356 KB Output is correct
12 Correct 2 ms 1260 KB Output is correct
13 Correct 2 ms 1356 KB Output is correct
14 Correct 2 ms 1228 KB Output is correct
15 Correct 2 ms 1356 KB Output is correct
16 Correct 2 ms 1332 KB Output is correct
17 Correct 2 ms 1344 KB Output is correct
18 Correct 2 ms 1344 KB Output is correct
19 Correct 2 ms 1356 KB Output is correct
20 Correct 3 ms 1356 KB Output is correct
21 Correct 4 ms 1356 KB Output is correct
22 Correct 3 ms 1352 KB Output is correct
23 Correct 5 ms 1356 KB Output is correct
24 Correct 3 ms 1356 KB Output is correct
25 Correct 3 ms 1352 KB Output is correct
26 Correct 3 ms 1352 KB Output is correct
27 Correct 3 ms 1356 KB Output is correct
28 Correct 2 ms 1352 KB Output is correct
29 Correct 4 ms 1356 KB Output is correct
30 Correct 3 ms 1356 KB Output is correct
31 Correct 3 ms 1356 KB Output is correct
32 Correct 3 ms 1356 KB Output is correct
33 Correct 2 ms 1356 KB Output is correct
34 Correct 5 ms 1356 KB Output is correct
35 Correct 5 ms 1356 KB Output is correct
36 Correct 3 ms 1356 KB Output is correct
37 Correct 4 ms 1416 KB Output is correct
38 Correct 4 ms 1412 KB Output is correct
39 Correct 3 ms 1356 KB Output is correct
40 Correct 2 ms 1348 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1356 KB Output is correct
2 Correct 1 ms 1356 KB Output is correct
3 Correct 1 ms 1356 KB Output is correct
4 Correct 1 ms 1356 KB Output is correct
5 Correct 2 ms 1408 KB Output is correct
6 Correct 2 ms 1356 KB Output is correct
7 Correct 3 ms 1348 KB Output is correct
8 Correct 3 ms 1356 KB Output is correct
9 Correct 2 ms 1352 KB Output is correct
10 Correct 2 ms 1356 KB Output is correct
11 Correct 2 ms 1356 KB Output is correct
12 Correct 2 ms 1260 KB Output is correct
13 Correct 2 ms 1356 KB Output is correct
14 Correct 2 ms 1228 KB Output is correct
15 Correct 2 ms 1356 KB Output is correct
16 Correct 2 ms 1332 KB Output is correct
17 Correct 2 ms 1344 KB Output is correct
18 Correct 2 ms 1344 KB Output is correct
19 Correct 2 ms 1356 KB Output is correct
20 Correct 3 ms 1356 KB Output is correct
21 Correct 4 ms 1356 KB Output is correct
22 Correct 3 ms 1352 KB Output is correct
23 Correct 5 ms 1356 KB Output is correct
24 Correct 3 ms 1356 KB Output is correct
25 Correct 3 ms 1352 KB Output is correct
26 Correct 3 ms 1352 KB Output is correct
27 Correct 3 ms 1356 KB Output is correct
28 Correct 2 ms 1352 KB Output is correct
29 Correct 4 ms 1356 KB Output is correct
30 Correct 3 ms 1356 KB Output is correct
31 Correct 3 ms 1356 KB Output is correct
32 Correct 3 ms 1356 KB Output is correct
33 Correct 2 ms 1356 KB Output is correct
34 Correct 5 ms 1356 KB Output is correct
35 Correct 5 ms 1356 KB Output is correct
36 Correct 3 ms 1356 KB Output is correct
37 Correct 4 ms 1416 KB Output is correct
38 Correct 4 ms 1412 KB Output is correct
39 Correct 3 ms 1356 KB Output is correct
40 Correct 2 ms 1348 KB Output is correct
41 Correct 3 ms 1612 KB Output is correct
42 Correct 4 ms 1612 KB Output is correct
43 Correct 4 ms 1612 KB Output is correct
44 Correct 4 ms 1600 KB Output is correct
45 Correct 7 ms 1612 KB Output is correct
46 Correct 7 ms 1612 KB Output is correct
47 Correct 10 ms 1724 KB Output is correct
48 Correct 13 ms 1612 KB Output is correct
49 Correct 11 ms 1724 KB Output is correct
50 Correct 10 ms 1724 KB Output is correct
51 Correct 13 ms 1724 KB Output is correct
52 Correct 11 ms 1604 KB Output is correct
53 Correct 8 ms 1612 KB Output is correct
54 Correct 15 ms 1612 KB Output is correct
55 Correct 9 ms 1728 KB Output is correct
56 Correct 13 ms 1612 KB Output is correct
57 Correct 12 ms 1612 KB Output is correct
58 Correct 9 ms 1612 KB Output is correct
59 Correct 8 ms 1612 KB Output is correct
60 Correct 15 ms 1612 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 295 ms 3320 KB Output is correct
2 Correct 311 ms 3312 KB Output is correct
3 Correct 264 ms 3312 KB Output is correct
4 Correct 290 ms 3276 KB Output is correct
5 Correct 270 ms 3316 KB Output is correct
6 Correct 333 ms 3304 KB Output is correct
7 Correct 386 ms 3304 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1228 KB Output is correct
2 Correct 2 ms 1220 KB Output is correct
3 Correct 1 ms 1228 KB Output is correct
4 Correct 1 ms 1228 KB Output is correct
5 Correct 5 ms 3268 KB Output is correct
6 Correct 5 ms 3272 KB Output is correct
7 Correct 5 ms 3200 KB Output is correct
8 Correct 5 ms 3276 KB Output is correct
9 Correct 5 ms 3276 KB Output is correct
10 Correct 3 ms 3276 KB Output is correct
11 Correct 1 ms 1336 KB Output is correct
12 Correct 36 ms 3300 KB Output is correct
13 Correct 41 ms 3300 KB Output is correct
14 Correct 21 ms 3272 KB Output is correct
15 Correct 158 ms 3316 KB Output is correct
16 Correct 108 ms 3316 KB Output is correct
17 Correct 30 ms 3264 KB Output is correct
18 Correct 335 ms 3308 KB Output is correct
19 Correct 187 ms 3312 KB Output is correct
20 Correct 47 ms 3324 KB Output is correct
21 Correct 2 ms 1356 KB Output is correct
22 Correct 1 ms 1356 KB Output is correct
23 Correct 1 ms 1356 KB Output is correct
24 Correct 1 ms 1356 KB Output is correct
25 Correct 2 ms 1408 KB Output is correct
26 Correct 2 ms 1356 KB Output is correct
27 Correct 3 ms 1348 KB Output is correct
28 Correct 3 ms 1356 KB Output is correct
29 Correct 2 ms 1352 KB Output is correct
30 Correct 2 ms 1356 KB Output is correct
31 Correct 2 ms 1356 KB Output is correct
32 Correct 2 ms 1260 KB Output is correct
33 Correct 2 ms 1356 KB Output is correct
34 Correct 2 ms 1228 KB Output is correct
35 Correct 2 ms 1356 KB Output is correct
36 Correct 2 ms 1332 KB Output is correct
37 Correct 2 ms 1344 KB Output is correct
38 Correct 2 ms 1344 KB Output is correct
39 Correct 2 ms 1356 KB Output is correct
40 Correct 3 ms 1356 KB Output is correct
41 Correct 4 ms 1356 KB Output is correct
42 Correct 3 ms 1352 KB Output is correct
43 Correct 5 ms 1356 KB Output is correct
44 Correct 3 ms 1356 KB Output is correct
45 Correct 3 ms 1352 KB Output is correct
46 Correct 3 ms 1352 KB Output is correct
47 Correct 3 ms 1356 KB Output is correct
48 Correct 2 ms 1352 KB Output is correct
49 Correct 4 ms 1356 KB Output is correct
50 Correct 3 ms 1356 KB Output is correct
51 Correct 3 ms 1356 KB Output is correct
52 Correct 3 ms 1356 KB Output is correct
53 Correct 2 ms 1356 KB Output is correct
54 Correct 5 ms 1356 KB Output is correct
55 Correct 5 ms 1356 KB Output is correct
56 Correct 3 ms 1356 KB Output is correct
57 Correct 4 ms 1416 KB Output is correct
58 Correct 4 ms 1412 KB Output is correct
59 Correct 3 ms 1356 KB Output is correct
60 Correct 2 ms 1348 KB Output is correct
61 Correct 3 ms 1612 KB Output is correct
62 Correct 4 ms 1612 KB Output is correct
63 Correct 4 ms 1612 KB Output is correct
64 Correct 4 ms 1600 KB Output is correct
65 Correct 7 ms 1612 KB Output is correct
66 Correct 7 ms 1612 KB Output is correct
67 Correct 10 ms 1724 KB Output is correct
68 Correct 13 ms 1612 KB Output is correct
69 Correct 11 ms 1724 KB Output is correct
70 Correct 10 ms 1724 KB Output is correct
71 Correct 13 ms 1724 KB Output is correct
72 Correct 11 ms 1604 KB Output is correct
73 Correct 8 ms 1612 KB Output is correct
74 Correct 15 ms 1612 KB Output is correct
75 Correct 9 ms 1728 KB Output is correct
76 Correct 13 ms 1612 KB Output is correct
77 Correct 12 ms 1612 KB Output is correct
78 Correct 9 ms 1612 KB Output is correct
79 Correct 8 ms 1612 KB Output is correct
80 Correct 15 ms 1612 KB Output is correct
81 Correct 295 ms 3320 KB Output is correct
82 Correct 311 ms 3312 KB Output is correct
83 Correct 264 ms 3312 KB Output is correct
84 Correct 290 ms 3276 KB Output is correct
85 Correct 270 ms 3316 KB Output is correct
86 Correct 333 ms 3304 KB Output is correct
87 Correct 386 ms 3304 KB Output is correct
88 Correct 12 ms 3264 KB Output is correct
89 Correct 12 ms 3232 KB Output is correct
90 Correct 28 ms 3304 KB Output is correct
91 Correct 23 ms 3320 KB Output is correct
92 Correct 65 ms 3312 KB Output is correct
93 Correct 60 ms 3304 KB Output is correct
94 Correct 136 ms 3312 KB Output is correct
95 Correct 192 ms 3312 KB Output is correct
96 Correct 239 ms 3444 KB Output is correct
97 Correct 267 ms 3312 KB Output is correct
98 Correct 121 ms 3308 KB Output is correct
99 Correct 121 ms 3308 KB Output is correct
100 Correct 121 ms 3300 KB Output is correct
101 Correct 146 ms 3300 KB Output is correct
102 Correct 124 ms 3244 KB Output is correct
103 Correct 122 ms 3304 KB Output is correct
104 Correct 119 ms 3312 KB Output is correct
105 Correct 146 ms 3300 KB Output is correct