Submission #443455

#	Time	Username	Problem	Language	Result	Execution time	Memory
443455		urd05	Distributing Candies (IOI21_candies)	C++17	0 / 100	99 ms	14772 KiB

candies

#include "candies.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> vec;
 
vector<int> distribute_candies(vector<int> c,vector<int> l, vector<int> r, vector<int> v) {
    int n = c.size();
    vec.resize(n);
    for(int i=0;i<n;i++) {
        vec[i]=0;
    }
    int q=v.size();
    int sq=450;
    for(int i=0;i<q;i+=sq) {
        int lq=i;
        int rq=min(i+sq-1,q-1);
        vector<int> lr;
        lr.push_back(0);
        lr.push_back(n);
        for(int j=lq;j<=rq;j++) {
            lr.push_back(l[j]);
            lr.push_back(r[j]+1);
        }
        sort(lr.begin(),lr.end());
        lr.erase(unique(lr.begin(),lr.end()));
        for(int j=0;j+1<lr.size();j++) {
            int del=0;
            int ube=c[0];
            int umax=c[0];
            int dbe=0;
            int dmin=0;
            for(int k=lq;k<=rq;k++) {
                if (l[k]<=lr[j]&&r[k]>=lr[j+1]-1) {
                    del+=v[k];
                    umax=min(umax,c[0]-del);
                    dmin=max(dmin,-del);
                    ube+=del;
                    dbe+=del;
                    ube=max(0,ube);
                    ube=min(c[0],ube);
                    dbe=max(0,dbe);
                    dbe=min(c[0],dbe);
                }
            }
            for(int k=lr[j];k<lr[j+1];k++) {
                if (vec[k]<=dmin) {
                    vec[k]=dbe;
                }
                else if (vec[k]>=umax) {
                    vec[k]=ube;
                }
                else {
                    vec[k]+=del;
                }
            }
        }
    }
    return vec;
}

Compilation message (stderr)

candies.cpp: In function 'std::vector<int> distribute_candies(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
candies.cpp:27:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |         for(int j=0;j+1<lr.size();j++) {
      |                     ~~~^~~~~~~~~~

• Subtask 1: 0 / 3
• Subtask 2: 0 / 8
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 33