Submission #494018

#	Time	Username	Problem	Language	Result	Execution time	Memory
494018		TeaTime	Robots (IOI13_robots)	C++17	90 / 100	3077 ms	13536 KiB

robots

#include "robots.h"
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <set>
#include <map>
 
using namespace std;
 
typedef long long ll;
typedef long double ld;
 
#define fastInp cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
 
int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
    ll mx = 1e6 + 100;
    int l = 0, r = T + 1;
    vector<ll> svd;
    for (int i = 0; i < A; i++) svd.push_back(X[i]);
    sort(svd.rbegin(), svd.rend());
 
    vector<pair<int, int>> vec;
    for (int i = 0; i < T; i++) vec.push_back({ W[i], S[i] });
 
    while (r - l > 1) {
        int mid = (l + r) / 2;
 
        vector<int> skip(T);
 
        map<int, int> st;
 
        for (int i = 0; i < B; i++) {
            st[Y[i]] += mid;
        }
 
        sort(vec.rbegin(), vec.rend());
 
        for (int i = 0; i < T; i++) {
            if (st.upper_bound(vec[i].second) != st.end()) {
                ll x = (*st.upper_bound(vec[i].second)).first;
                st[x]--;
                skip[i] = 1;
                if (st[x] == 0) st.erase(x);
            }
        }
 
        ll pt = 0, pt2 = 0;
        bool f = 1;
        for (int i = 0; i < T; i++) {
            if (skip[i]) continue;
 
            if (svd.size() > pt && svd[pt] > vec[i].first) {
                pt2++;
                if (pt2 == mid) {
                    pt2 = 0;
                    pt++;
                }
            } else {
                f = 0;
                break;
            }
        }
 
        if (f) {
            r = mid;
        } else {
            l = mid;
        }
    }
 
 
    if (r == T + 1) {
        return -1;
    } else {
        return r;
    }
}

Compilation message (stderr)

robots.cpp: In function 'int putaway(int, int, int, int*, int*, int*, int*)':
robots.cpp:53:28: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   53 |             if (svd.size() > pt && svd[pt] > vec[i].first) {
      |                 ~~~~~~~~~~~^~~~
robots.cpp:17:8: warning: unused variable 'mx' [-Wunused-variable]
   17 |     ll mx = 1e6 + 100;
      |        ^~

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 25 / 25
• Subtask 4: 37 / 37
• Subtask 5: 0 / 10