Submission #561330

#	Time	Username	Problem	Language	Result	Execution time	Memory
561330		Joshi503	Teams (IOI15_teams)	C++14	34 / 100	4086 ms	10336 KiB

teams

#include <teams.h>
#include <bits/stdc++.h>
using namespace std;
 
using ll = long long;
using db = long double;
using str = string;
using pi = pair<int, int>;
using pl = pair<ll, ll>;
using pd = pair<db, db>;
#define f first
#define s second
 
#define tcT template<class T
#define tcTU tcT, class U
tcT> using V = vector<T>;
tcT, size_t SZ > using AR = array<T, SZ>;
using vi = V<int>;
using vb = V<bool>;
using vl = V<ll>;
using vd = V<db>;
using vs = V<str>;
using vpi = V<pi>;
using vpl = V<pl>;
 
#define sz(x) int((x).size())
#define bg(x) begin(x)
#define all(x) bg(x), end(x)
#define rall(x) x.rbegin(), x.rend() 
#define sor(x) sort(all(x)) 
#define pb push_back
 
#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 rep(a) F0R(_,a)
#define each(a,x) for (auto& a: x)
 
const ll MOD = 1e9 + 7;
const ll MX = 1e9;
const ll INF = 1e18;
const db PI = acos((db)-1);
const int ddef[4]{ 1,0,-1,0 }, dataq[4]{ 0,1,0,-1 };
mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count());
template<class T> using pqg = priority_queue<T, vector<T>, greater<T>>;
 
void setIO(string name = "") {
    ios_base::sync_with_stdio(0); cin.tie(0);
    if (sz(name)) {
        freopen((name + ".in").c_str(), "r", stdin);
        freopen((name + ".out").c_str(), "w", stdout);
    }
}
 
void _print(char i) { cerr << i; }
void _print(string i) { cerr << i; }
void _print(float i) { cerr << i; }
void _print(int i) { cerr << i; }
void _print(double i) { cerr << i; }
void _print() { cerr << "\n"; };
template<typename x, typename y> void _print(pair<x, y>& t) { cerr << "{";_print(t.first);cerr << ", ";_print(t.second);cerr << "},"; }
template<typename x> void _print(x& t) { cerr << "{"; for (int i = 0;i < (int)t.size();i++) { _print(t[i]); if (i < (int)t.size() - 1) cerr << ", "; } cerr << "}"; }
template<typename x, typename... y> void _print(x a, y... b) { _print(a);if (sizeof...(b)) cerr << ", ";_print(b...); }
#define dbg(x...) cerr<<"["<<#x<<"] = [";_print(x);cerr<<"]\n";
 
int n;
const int MXN = 500001; 
 
vector<pi> alfa(MXN);
 
bool cmp(const pi& x, const pi& y){
    if(x.f == y.f){
        return x.s < y.s;
    }
    return x.s < y.s;
}
 
void init(int N, int A[], int B[]) {
    n = N;
    F0R(i, n){
        alfa[i].f = A[i];
    }
    F0R(i, n){
        alfa[i].s = B[i];
    }

    sort(alfa.begin(), alfa.begin() + n, cmp);  
 
    // F0R(i, n){
    //     cout << alfa[i].f << " ";
    // }
    // cout << "\n";
    // F0R(i, n){
    //     cout << alfa[i].s << " ";
    // }
    // cout << "\n";
}
 
int can(int M, int K[]) {
    vector<pair<int, int>> a(M);
    vi k(M);
    vi idk(M);
    F0R(i, M){
        a[i].f = K[i];
        a[i].s = i;
    }
    sor(a);
    F0R(i, M){
        k[i] = a[i].f;
        idk[i] = a[i].s;
    }
	vi taken(M, 0);
	F0R(i, n){
		auto it = lower_bound(all(k), alfa[i].f);
		int idx = (int)(it - k.begin());
        // cout << idx << " " << sz(k) << "\n"; 
		// F0R(j, sz(k)){
        //     cout << k[j] << " ";
        // }
        // cout << "a\n";
        if(sz(k) && idx >= 0 && idx < M && k[idx] >= alfa[i].f && k[idx] <= alfa[i].s){
            taken[idk[idx]]++;
            // cout << idk[idx] << " " << taken[idk[idx]] << "\n";
			if(taken[idk[idx]] == K[idk[idx]]){
				k.erase(k.begin() + idx);
				idk.erase(idk.begin() + idx);
			}
		}
        else{
            idx--;
            if(sz(k) && idx >= 0 && idx < M && k[idx] >= alfa[i].f && k[idx] <= alfa[i].s){
                taken[idk[idx]]++;
                // cout << alfa[i].f << "b " << alfa[i].s << " " << k[idx] << " " << taken[idk[idx]] << "\n";
                if(taken[idk[idx]] == K[idk[idx]]){
                    k.erase(k.begin() + idx);
                    idk.erase(idk.begin() + idx);
                }
            }
        }
        
	}

    
    return sz(k) == 0;
 
}

Compilation message (stderr)

teams.cpp: In function 'void setIO(std::string)':
teams.cpp:51:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         freopen((name + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
teams.cpp:52:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 21 / 21
• Subtask 2: 13 / 13
• Subtask 3: 0 / 43
• Subtask 4: 0 / 23