oj.uz

Submission #598890

# Submission time Handle Problem Language Result Execution time Memory
598890 2022-07-19T07:16:17 Z denniskim Let's Win the Election (JOI22_ho_t3) C++17
21 / 100
 1499 ms 460 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef __int128 lll;
typedef long double ld;
#define MAX 9223372036854775807LL
#define MIN -9223372036854775807LL
#define INF 0x3f3f3f3f3f3f3f3f
#define fi first
#define se second

ll n;
ll k;
pair< pair<ll, ll>, ll> a[510];
pair<ll, ll> won[510];
ld ans = INF;
ll chk[510];

ld calc(void)
{
	vector<ll> aa, bb;
	ld ret = 0;
	ll ppl = 1;
	
	for(ll i = 1 ; i <= n ; i++)
	{
		if(chk[i] == 1)
			aa.push_back({won[i].se});
		else if(chk[i] == 2)
			bb.push_back({won[i].fi});
	}
	
	sort(bb.begin(), bb.end());
	
	for(auto &i : bb)
	{
		ret += (ld)i / (ld)ppl;
		ppl++;
	}
	
	for(auto &i : aa)
		ret += (ld)i / (ld)ppl;
	
	return ret;
}

int main(void)
{
	scanf("%lld", &n);
	scanf("%lld", &k);
	
	for(ll i = 1 ; i <= n ; i++)
	{
		scanf("%lld %lld", &a[i].fi.se, &a[i].fi.fi);
		
		if(a[i].fi.fi == -1)
			a[i].fi.fi = 1000000000000;
		
		won[i] = a[i].fi;
		a[i].se = i;
	}
	
	sort(a + 1, a + 1 + n);
	
	for(ll i = 1 ; i <= k ; i++)
		chk[a[i].se] = 2;
	
	for(ll i = 0 ; i <= k ; i++)
	{
		vector<ll> vec;
		vector< pair< pair<ll, ll>, ll> > vec2;
		ld minn = INF;
		ll gap1, gap2;
		ll A = i, B = k - i;
		ll mini = INF, ww = 0;
		ll ad = 0, sb = 0;
		
		ans = min(ans, calc());
		
		for(ll j = 1 ; j <= n ; j++)
		{
			if(chk[a[j].se] == 2)
				vec.push_back(j);
			
			else if(!chk[a[j].se])
			{
				if(mini > a[j].fi.se)
				{
					mini = a[j].fi.se;
					ww = j;
				}
			}
		}
		
		for(auto &j : vec)
		{
			chk[a[j].se] = 0;
			chk[a[j].se] = 1;
			
			ld gappp = calc();
			
			if(minn > gappp)
			{
				minn = gappp;
				ad = a[j].se;
				sb = a[j].se;
			}
			
			chk[a[j].se] = 2;
			
			if(ww)
			{
				chk[a[j].se] = 0;
				chk[a[ww].se] = 1;
				
				gappp = calc();
				
				if(minn > gappp)
				{
					minn = gappp;
					ad = a[ww].se;
					sb = a[j].se;
				}
				
				chk[a[j].se] = 2;
				chk[a[ww].se] = 0;
			}
		}
		
		chk[sb] = 0;
		chk[ad] = 1;
	}
	
	ans = min(ans, calc());
	
	printf("%.10Lf", ans);
	return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:74:6: warning: unused variable 'gap1' [-Wunused-variable]
   74 |   ll gap1, gap2;
      |      ^~~~
Main.cpp:74:12: warning: unused variable 'gap2' [-Wunused-variable]
   74 |   ll gap1, gap2;
      |            ^~~~
Main.cpp:75:6: warning: unused variable 'A' [-Wunused-variable]
   75 |   ll A = i, B = k - i;
      |      ^
Main.cpp:75:13: warning: unused variable 'B' [-Wunused-variable]
   75 |   ll A = i, B = k - i;
      |             ^
Main.cpp:50:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |  scanf("%lld", &n);
      |  ~~~~~^~~~~~~~~~~~
Main.cpp:51:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |  scanf("%lld", &k);
      |  ~~~~~^~~~~~~~~~~~
Main.cpp:55:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |   scanf("%lld %lld", &a[i].fi.se, &a[i].fi.fi);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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 0 ms 212 KB Output is correct
5 Correct 4 ms 212 KB Output is correct
6 Correct 30 ms 304 KB Output is correct
7 Correct 187 ms 212 KB Output is correct
8 Correct 551 ms 320 KB Output is correct
9 Correct 663 ms 312 KB Output is correct
10 Correct 489 ms 320 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 0 ms 212 KB Output is correct
5 Correct 4 ms 212 KB Output is correct
6 Correct 30 ms 304 KB Output is correct
7 Correct 187 ms 212 KB Output is correct
8 Correct 551 ms 320 KB Output is correct
9 Correct 663 ms 312 KB Output is correct
10 Correct 489 ms 320 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 78 ms 308 KB Output is correct
13 Correct 79 ms 304 KB Output is correct
14 Correct 73 ms 308 KB Output is correct
15 Correct 951 ms 312 KB Output is correct
16 Correct 944 ms 316 KB Output is correct
17 Correct 628 ms 316 KB Output is correct
18 Correct 1499 ms 328 KB Output is correct
19 Correct 1353 ms 316 KB Output is correct
20 Correct 879 ms 444 KB Output is correct

Subtask #3
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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 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 0 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 0 ms 212 KB Output is correct
15 Incorrect 0 ms 212 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #4
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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 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 0 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 0 ms 212 KB Output is correct
15 Incorrect 0 ms 212 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #5
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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 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 0 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 0 ms 212 KB Output is correct
15 Incorrect 0 ms 212 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1478 ms 312 KB Output is correct
2 Correct 1462 ms 316 KB Output is correct
3 Correct 1462 ms 312 KB Output is correct
4 Correct 1479 ms 332 KB Output is correct
5 Correct 1459 ms 316 KB Output is correct
6 Correct 1444 ms 460 KB Output is correct
7 Correct 1461 ms 316 KB Output is correct

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 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 4 ms 212 KB Output is correct
6 Correct 30 ms 304 KB Output is correct
7 Correct 187 ms 212 KB Output is correct
8 Correct 551 ms 320 KB Output is correct
9 Correct 663 ms 312 KB Output is correct
10 Correct 489 ms 320 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 78 ms 308 KB Output is correct
13 Correct 79 ms 304 KB Output is correct
14 Correct 73 ms 308 KB Output is correct
15 Correct 951 ms 312 KB Output is correct
16 Correct 944 ms 316 KB Output is correct
17 Correct 628 ms 316 KB Output is correct
18 Correct 1499 ms 328 KB Output is correct
19 Correct 1353 ms 316 KB Output is correct
20 Correct 879 ms 444 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 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 1 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 0 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 Incorrect 0 ms 212 KB Output isn't correct
36 Halted 0 ms 0 KB -