Submission #403077

#	Time	Username	Problem	Language	Result	Execution time	Memory
403077		ACmachine	Robots (IOI13_robots)	C++17	100 / 100	1953 ms	22416 KiB

robots

#include "robots.h"
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using ordered_map = tree<T, U, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

typedef long long ll;
typedef long double ld;

typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

typedef vector<int> vi;
typedef vector<ll> vll;

#define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
#define FORD(i,j,k,in) for(int i=(j); i >=(k);i-=in)
#define REP(i,b) FOR(i,0,b,1)
#define REPD(i,b) FORD(i,b,0,1)
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define MANY_TESTS int tcase; cin >> tcase; while(tcase--)

const double EPS = 1e-9;
const int MOD = 1e9+7;
const ll INFF = 1e18;
const int INF = 1e9;
const ld PI = acos((ld)-1);
const vi dy = {1, 0, -1, 0, -1, 1, 1, -1};
const vi dx = {0, 1, 0, -1, -1, 1, -1, 1};

void DBG(){cout << "]" << endl;}
template<typename T, typename ...U> void DBG(const T& head, const U... args){ cout << head << "; "; DBG(args...); }
#define dbg(...) cout << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__);
#define chk() cout << "Check at line(" << __LINE__ << ") hit." << endl;

template<class T, unsigned int U>
ostream& operator<<(ostream& out, const array<T, U> &v){out << "[";  REP(i, U) out << v[i] << ", ";  out << "]"; return out;}
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "[" << par.first << ";" << par.second << "]"; return out;}
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template<class T>
ostream& operator<<(ostream& out, const vector<T> &v){ out << "[";  REP(i, v.size()) out << v[i] << ", ";  out << "]"; return out;}

template<class T>
istream& operator>>(istream& in, vector<T> &v){ for(auto &x : v) in >> x; return in; }

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
    sort(X, X + A);
    sort(Y, Y + B);
    vector<int> sorted_toys(T);
    iota(all(sorted_toys), 0);
    sort(all(sorted_toys), [&](int lhs, int rhs){
        return W[lhs] < W[rhs];
    });
    auto solve = [&](int n)->bool{
        priority_queue<int> pq;
        int pp = 0;
        REP(i, A){
            while(pp < T && W[sorted_toys[pp]] < X[i]){
                pq.push(S[sorted_toys[pp]]);
                pp++;
            }
            REP(j, n){
                if(pq.empty()) break;
                pq.pop();
            }
        }
        while(pp < T){
            pq.push(S[sorted_toys[pp]]);
            pp++;
        }
        REPD(i, B - 1){
            if(pq.empty()) return true;
            if(pq.top() >= Y[i])
                return false;
            REP(j, n){
                if(pq.empty())
                    return true;
                pq.pop();
            }
        }
        if(!pq.empty())
            return false;
        return true;
    };
    int l = 0;
    int r = (int)1e6 + 5;
    int ans = INF;
    while(l <= r){
        int mid = (l + r) >> 1;
        if(solve(mid)){
            ans = mid;
            r = mid - 1;
        }
        else{
            l = mid + 1;
        }
    }
    if(ans == INF)
        return -1;
    else
        return ans;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 25 / 25
• Subtask 4: 37 / 37
• Subtask 5: 10 / 10