Submission #388789

#	Time	Username	Problem	Language	Result	Execution time	Memory
388789		arwaeystoamneg	Poi (IOI09_poi)	C++17	100 / 100	317 ms	15948 KiB

poi

// EXPLOSION!
#define _CRT_SECURE_NO_WARNINGS
#include<bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
#include<chrono>

using namespace std;
typedef pair<int, int> pii;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pair<int, int>> vpi;
typedef vector<pair<ll, ll>> vpll;

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define pb push_back
#define mp make_pair
#define rsz resize
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
#define f first
#define s second
#define cont continue
#define endl '\n'
//#define ednl '\n'
#define test int testc;cin>>testc;while(testc--)
#define pr(a, b) trav(x,a)cerr << x << b; cerr << endl;
#define message cout << "Hello World" << endl;
const int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 }; // for every grid problem!!
const ll linf = 4000000000000000000LL;
const ll inf = 1000000007;//998244353  
const ld pi = 3.1415926535;

void pv(vi a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vll a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vector<vi>a) {
	F0R(i, sz(a)) { cout << i << endl; pv(a[i]); cout << endl; }
}void pv(vector<vll>a) { F0R(i, sz(a)) { cout << i << endl; pv(a[i]); }cout << endl; }void pv(vector<string>a) { trav(x, a)cout << x << endl; cout << endl; }
void setIO(string s) {
	ios_base::sync_with_stdio(0); cin.tie(0);
	if (sz(s))
	{
		freopen((s + ".in").c_str(), "r", stdin);
		if (s != "test1")
			freopen((s + ".out").c_str(), "w", stdout);
	}
}
int n, m, p;
vector<vi>a;
vi b, c;

int main()
{
	setIO("");


	cin >> n >> m >> p;
	a.rsz(n, vi(m));
	F0R(i, n)F0R(j, m)cin >> a[i][j];
	vi v(m, n);
	F0R(i, n)
	{
		F0R(j, m)
		{
			if (a[i][j])v[j]--;
		}
	}
	b.rsz(n);
	c.rsz(n);
	F0R(i, n)
	{
		F0R(j, m)
		{
			if (a[i][j])b[i] += v[j], c[i]++;
		}
	}
	vi order(n);
	iota(all(order), 0);
	sort(all(order), [](int i, int j) {
		if (b[i] == b[j])
		{
			if (c[i] == c[j])
			{
				return i < j;
			}
			return c[i] > c[j];
		}
		return b[i] > b[j];
		});
	cout << b[p - 1] << " ";
	cout << find(all(order), p - 1) - order.begin() + 1 << endl;
}

Compilation message (stderr)

poi.cpp: In function 'void setIO(std::string)':
poi.cpp:49:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   49 |   freopen((s + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
poi.cpp:51:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   51 |    freopen((s + ".out").c_str(), "w", stdout);
      |    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100