Submission #971020

#	Time	Username	Problem	Language	Result	Execution time	Memory
971020		andro	Robots (IOI13_robots)	C++14	53 / 100	183 ms	23480 KiB

robots

#include <bits/stdc++.h>

#include "robots.h"

using namespace std;

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
    sort(X, X + A);
    sort(Y, Y + B);
    for(int i = 0; i < T; i++) {
        if(W[i] >= X[A - 1] && S[i] >= Y[B - 1]) {
            return - 1;
        }
    }
    vector<pair<int,int>> omg;
    for(int i = 0; i < T; i++) {
        omg.push_back({W[i], S[i]});
    }
    sort(omg.begin(), omg.end());
    int l = 1, r = 1e6, ans = - 1;
    while(l <= r) {
        int mid = (l + r) / 2;
        int pok = A - 1;
        int R = 0;
        vector<pair<int,int>> ostalo;
        for(int i = omg.size() - 1; i >= 0; i--) {
            //cout << pok << " " << omg[i].first << " " << omg[i].second << "\n";
            if(pok < 0) {
                for(int j = i; j >= 0; j--) {
                    ostalo.push_back({omg[j].second, omg[j].first});
                }
                break;
            }
            if(X[pok] > omg[i].first) {
                R += 1;
                if(R >= mid) {
                    R = 0;
                    pok -= 1;
                }
            }
            else {
                ostalo.push_back({omg[i].second, omg[i].first});
            }
        }
        //return 1;
        sort(ostalo.begin(), ostalo.end());
        for(auto it : ostalo) {
            //cout << it.second << " " << it.first << "\n";
        }
        //return 1;
        pok = B - 1;
        R = 0;
        int ok = 0;
        for(int i = ostalo.size() - 1; i >= 0; i--) {
            if(pok < 0) {
                ok = 1;
                break;
            }
            if(Y[pok] > ostalo[i].first) {
                R += 1;
                if(R >= mid) {
                    R = 0;
                    pok -= 1;
                }
            }
            else {
                ok = 1;
                break;
            }
        }
        ok ^= 1;
        if(ok) {
            r = mid - 1;
            ans = mid;
        }
        else {
            l = mid + 1;
        }
        //cout << l << " " << r << "\n";
        //return - 1;
    }
    return ans;
}
/*
int main() {
    int A = 3;
    int B = 2;
    int T = 10;
    int X[3] = {6, 2, 9};
    int Y[2] = {4, 7};
    int W[10] = {4, 8, 2, 7, 1, 5, 3, 8, 7, 10};
    int S[10] = {6, 5, 3, 9, 8, 1, 3, 7, 6, 5};
    cout << putaway(A, B, T, X, Y, W, S);
    int A = 2;
    int B = 1;
    int T = 3;
    int X[2] = {2, 5};
    int Y[1] = {2};
    int W[3] = {3, 5, 2};
    int S[3] = {1, 3, 2};
    cout << putaway(A, B, T, X, Y, W, S);
}*/

Compilation message (stderr)

robots.cpp: In function 'int putaway(int, int, int, int*, int*, int*, int*)':
robots.cpp:47:18: warning: variable 'it' set but not used [-Wunused-but-set-variable]
   47 |         for(auto it : ostalo) {
      |                  ^~

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