oj.uz

Submission #536751

# Submission time Handle Problem Language Result Execution time Memory
536751 2022-03-14T01:25:50 Z kym Let's Win the Election (JOI22_ho_t3) C++14
10 / 100
 698 ms 1008536 KB 
#include <bits/stdc++.h>
using namespace std;
#define int ll 
#define FOR(i,s,e) for(ll i = s; i <= (ll)e; ++i)
#define DEC(i,s,e) for(ll i = s; i >= (ll)e; --i)
#define IAMSPEED ios_base::sync_with_stdio(false); cin.tie(0);
#ifdef LOCAL
#define db(x) cerr << #x << "=" << x << "\n"
#define db2(x, y) cerr << #x << "=" << x << " , " << #y << "=" << y << "\n"
#define db3(a,b,c) cerr<<#a<<"="<<a<<","<<#b<<"="<<b<<","<<#c<<"="<<c<<"\n"
#define dbv(v) cerr << #v << ":"; for (auto ite : v) cerr << ite << ' '; cerr <<"\n"
#define dbvp(v) cerr << #v << ":"; for (auto ite : v) cerr << "{"  << ite.f << ',' << ite.s << "} "; cerr << "\n"
#define dba(a,ss,ee) cerr << #a << ":"; FOR(ite,ss,ee) cerr << a[ite] << ' '; cerr << "\n"
#define reach cerr << "LINE: " << __LINE__ << "\n";
#else
#define db(x)
#define db2(x,y)
#define db3(a,b,c)
#define dbv(v)
#define dbvp(v)
#define dba(a,ss,ee)
#define reach 
#endif
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define ll long long 
#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define f first
#define s second
#define g0(x) get<0>(x)
#define g1(x) get<1>(x)
#define g2(x) get<2>(x)
#define g3(x) get<3>(x)
typedef pair <ll, ll> pi;
typedef tuple<ll,ll,ll> ti3;
typedef tuple<ll,ll,ll,ll> ti4;
ll rand(ll a, ll b) { return a + rng() % (b-a+1); }
const int MOD = 1e9 + 7;
const int inf = (int)1e9 + 500;
const long long oo = (ll)1e18 + 500;
template <typename T> void chmax(T& a, const T b) { a=max(a,b); }
template <typename T> void chmin(T& a, const T b) { a=min(a,b); }
const int MAXN = 505;
int n,m;
pi A[MAXN];
double dp[MAXN][MAXN][MAXN]; //dp[index][votes][collaborators]
int32_t main() 
{
	IAMSPEED
	cin >> n >> m;
	FOR(i,1,n) {
		cin >> A[i].f >> A[i].s;
		if(A[i].s==-1)A[i].s=inf;
	}
	sort(A+1,A+n+1,[](pi a, pi b) {
		return a.s < b.s;
	});
	FOR(i,0,MAXN-1)FOR(j,0,MAXN-1)FOR(k,0,MAXN-1)dp[i][j][k]=inf;
	dp[0][0][1] = 0;
	FOR(i,1,n) {
		FOR(j,0,m) {
			FOR(k,1,i+1) {
				chmin(dp[i][j][k],dp[i-1][j][k]); // ignore
				if(j>0)chmin(dp[i][j][k],dp[i-1][j-1][k] + (double)(A[i].f)/(double)(k)); //only get votes
				if(A[i].s!=inf && k>1)chmin(dp[i][j][k],dp[i-1][j-1][k-1] + (double)(A[i].s)/(double)(k-1));//get collaborator
			}
		}
	}
	cout << fixed << setprecision(20);
	double ans = inf;
	FOR(i,1,MAXN-1) {
		chmin(ans, dp[n][m][i]);
	}
	cout << ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 422 ms 1008432 KB Output is correct
2 Correct 427 ms 1008408 KB Output is correct
3 Correct 420 ms 1008320 KB Output is correct
4 Correct 466 ms 1008348 KB Output is correct
5 Correct 431 ms 1008332 KB Output is correct
6 Correct 461 ms 1008448 KB Output is correct
7 Correct 521 ms 1008376 KB Output is correct
8 Correct 539 ms 1008432 KB Output is correct
9 Correct 584 ms 1008392 KB Output is correct
10 Correct 536 ms 1008324 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 422 ms 1008432 KB Output is correct
2 Correct 427 ms 1008408 KB Output is correct
3 Correct 420 ms 1008320 KB Output is correct
4 Correct 466 ms 1008348 KB Output is correct
5 Correct 431 ms 1008332 KB Output is correct
6 Correct 461 ms 1008448 KB Output is correct
7 Correct 521 ms 1008376 KB Output is correct
8 Correct 539 ms 1008432 KB Output is correct
9 Correct 584 ms 1008392 KB Output is correct
10 Correct 536 ms 1008324 KB Output is correct
11 Correct 431 ms 1008328 KB Output is correct
12 Correct 510 ms 1008460 KB Output is correct
13 Correct 490 ms 1008396 KB Output is correct
14 Correct 481 ms 1008332 KB Output is correct
15 Correct 623 ms 1008536 KB Output is correct
16 Correct 615 ms 1008332 KB Output is correct
17 Correct 549 ms 1008396 KB Output is correct
18 Correct 683 ms 1008332 KB Output is correct
19 Correct 625 ms 1008332 KB Output is correct
20 Correct 585 ms 1008460 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 469 ms 1008412 KB Output is correct
2 Correct 420 ms 1008416 KB Output is correct
3 Correct 432 ms 1008336 KB Output is correct
4 Correct 476 ms 1008380 KB Output is correct
5 Correct 428 ms 1008388 KB Output is correct
6 Correct 422 ms 1008344 KB Output is correct
7 Correct 426 ms 1008372 KB Output is correct
8 Correct 428 ms 1008460 KB Output is correct
9 Incorrect 419 ms 1008396 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 469 ms 1008412 KB Output is correct
2 Correct 420 ms 1008416 KB Output is correct
3 Correct 432 ms 1008336 KB Output is correct
4 Correct 476 ms 1008380 KB Output is correct
5 Correct 428 ms 1008388 KB Output is correct
6 Correct 422 ms 1008344 KB Output is correct
7 Correct 426 ms 1008372 KB Output is correct
8 Correct 428 ms 1008460 KB Output is correct
9 Incorrect 419 ms 1008396 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 469 ms 1008412 KB Output is correct
2 Correct 420 ms 1008416 KB Output is correct
3 Correct 432 ms 1008336 KB Output is correct
4 Correct 476 ms 1008380 KB Output is correct
5 Correct 428 ms 1008388 KB Output is correct
6 Correct 422 ms 1008344 KB Output is correct
7 Correct 426 ms 1008372 KB Output is correct
8 Correct 428 ms 1008460 KB Output is correct
9 Incorrect 419 ms 1008396 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 698 ms 1008460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 422 ms 1008432 KB Output is correct
2 Correct 427 ms 1008408 KB Output is correct
3 Correct 420 ms 1008320 KB Output is correct
4 Correct 466 ms 1008348 KB Output is correct
5 Correct 431 ms 1008332 KB Output is correct
6 Correct 461 ms 1008448 KB Output is correct
7 Correct 521 ms 1008376 KB Output is correct
8 Correct 539 ms 1008432 KB Output is correct
9 Correct 584 ms 1008392 KB Output is correct
10 Correct 536 ms 1008324 KB Output is correct
11 Correct 431 ms 1008328 KB Output is correct
12 Correct 510 ms 1008460 KB Output is correct
13 Correct 490 ms 1008396 KB Output is correct
14 Correct 481 ms 1008332 KB Output is correct
15 Correct 623 ms 1008536 KB Output is correct
16 Correct 615 ms 1008332 KB Output is correct
17 Correct 549 ms 1008396 KB Output is correct
18 Correct 683 ms 1008332 KB Output is correct
19 Correct 625 ms 1008332 KB Output is correct
20 Correct 585 ms 1008460 KB Output is correct
21 Correct 469 ms 1008412 KB Output is correct
22 Correct 420 ms 1008416 KB Output is correct
23 Correct 432 ms 1008336 KB Output is correct
24 Correct 476 ms 1008380 KB Output is correct
25 Correct 428 ms 1008388 KB Output is correct
26 Correct 422 ms 1008344 KB Output is correct
27 Correct 426 ms 1008372 KB Output is correct
28 Correct 428 ms 1008460 KB Output is correct
29 Incorrect 419 ms 1008396 KB Output isn't correct
30 Halted 0 ms 0 KB -