Submission #1044530

#	Time	Username	Problem	Language	Result	Execution time	Memory
1044530		pan	Let's Win the Election (JOI22_ho_t3)	C++17	0 / 100	590 ms	1048580 KiB

Main

#include <bits/stdc++.h>
//#include "bits_stdc++.h"
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define endl '\n'
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define lb lower_bound
#define ub upper_bound
#define input(x) scanf("%lld", &x);
#define input2(x, y) scanf("%lld%lld", &x, &y);
#define input3(x, y, z) scanf("%lld%lld%lld", &x, &y, &z);
#define input4(x, y, z, a) scanf("%lld%lld%lld%lld", &x, &y, &z, &a);
#define print(x, y) printf("%lld%c", x, y);
#define show(x) cerr << #x << " is " << x << endl;
#define show2(x,y) cerr << #x << " is " << x << " " << #y << " is " << y << endl;
#define show3(x,y,z) cerr << #x << " is " << x << " " << #y << " is " << y << " " << #z << " is " << z << endl;
#define all(x) x.begin(), x.end()
#define discretize(x) sort(x.begin(), x.end()); x.erase(unique(x.begin(), x.end()), x.end());
#define FOR(i, x, n) for (ll i =x; i<=n; ++i)
#define RFOR(i, x, n) for (ll i =x; i>=n; --i) 
using namespace std;
mt19937_64 rnd(chrono::steady_clock::now().time_since_epoch().count());
//using namespace __gnu_pbds;
//#define ordered_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
//#define ordered_multiset tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update>
typedef long long ll;
typedef long double ld;
typedef pair<ld, ll> pd;
typedef pair<string, ll> psl;
typedef pair<ll, ll> pi;
typedef pair<pi, ll> pii;
typedef pair<pi, pi> piii;

ld const INF = 1e16;

ll n, k;
ld dp[505][505][505]; // dp[using city until][no.of conllaborator][count vote]
pi city[505];
int main()
{
	input2(n, k);
	for (ll i=1; i<=n; ++i)  {input2(city[i].s, city[i].f); if (city[i].f==-1) city[i].f = INF;}
	sort(city+1, city+n+1);
	for (ll x=0; x<=n; ++x) for (ll i=0; i<=n; ++i) for (ll j=0; j<=n; ++j) dp[x][i][j] = INF;
	dp[0][0][0] = 0;
	for (ll i=1; i<=n; ++i)
	{
		for (ll j=0; j<=i; ++j)
		{
			for (ll x = 0; x<=min(i, k); ++x)
			{
				dp[i][j][x] = dp[i-1][j][x];
				if (j && x) dp[i][j][x] = min(dp[i][j][x], dp[i-1][j-1][x-1] + ld(ld(city[i].f)/(ld(j))));
				if (x) dp[i][j][x] = min(dp[i][j][x], dp[i-1][j][x-1] + ld(ld(city[i].s)/ld(j+1)));
			}
		}
	}
	ld ans = INF;
	for (ll i=0; i<=n; ++i) ans = min(ans, dp[n][i][k]);
	cout << setprecision(15) << fixed << ans << endl;
	
	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:13:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define input2(x, y) scanf("%lld%lld", &x, &y);
      |                      ~~~~~^~~~~~~~~~~~~~~~~~~~
Main.cpp:44:2: note: in expansion of macro 'input2'
   44 |  input2(n, k);
      |  ^~~~~~
Main.cpp:13:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define input2(x, y) scanf("%lld%lld", &x, &y);
      |                      ~~~~~^~~~~~~~~~~~~~~~~~~~
Main.cpp:45:28: note: in expansion of macro 'input2'
   45 |  for (ll i=1; i<=n; ++i)  {input2(city[i].s, city[i].f); if (city[i].f==-1) city[i].f = INF;}
      |                            ^~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 11
• Subtask 4: 0 / 12
• Subtask 5: 0 / 33
• Subtask 6: 0 / 11
• Subtask 7: 0 / 23