Submission #909827

#	Time	Username	Problem	Language	Result	Execution time	Memory
909827		guechotjrhh	Minerals (JOI19_minerals)	C++14	40 / 100	19 ms	2696 KiB

minerals

#include "minerals.h"
#include<vector>
#include<set>
using namespace std;

int n, s;
void solve0(vector<int>& in, vector<int>& rest);
void solve(vector<int>& in, vector<int>& rest) {
    if (in.size() == 1) { Query(in[0]); Answer(in[0], rest[0]); return; }
    
    //better cut - not 1/2
    vector<int> in1, in2;
    for (int i = 0; i < in.size() / 2; i++) in1.push_back(in[i]);
    for (int i = in.size() / 2; i < in.size(); i++) in2.push_back(in[i]);
    
    //get rest for in1. possible better - not to take out right away
    int sz = 0;
    for (int i : in2) sz = Query(i);
    vector<int> rest1, rest2;
    for (int j : rest) {
        int u = Query(j);
        if (u == sz) rest1.push_back(j);
        else {
            rest2.push_back(j);
            sz = u;
            //Query(j);
        }
    }
    solve0(in1, rest1);
    for (int i : in2) Query(i);
    solve0(in2, rest2);
}

void solve0(vector<int>& in, vector<int>& rest) {// rest are also in
    if (in.size() == 1) { Query(in[0]); Query(rest[0]);  Answer(in[0], rest[0]); return; }

    //better cut - not 1/2
    vector<int> in1, in2;
    for (int i = 0; i < in.size() / 2; i++) in1.push_back(in[i]);
    for (int i = in.size() / 2; i < in.size(); i++) in2.push_back(in[i]);

    //get rest for in1. possible better - not to take out right away
    int sz = 0;
    for (int i : in2) sz = Query(i);
    vector<int> rest1, rest2;
    for (int j : rest) {
        int u = Query(j); //Query(j);
        if (u == sz) rest1.push_back(j);
        else {
            sz = u;  rest2.push_back(j);
        }
    }
    solve(in1, rest1);
    for (int i : in2) Query(i);
    solve(in2, rest2);
}

void Solve(int N) {
    n = N; s = n << 1;
    int sz = 0;
    vector<int> in, rest;
    for (int i = 1; i <= s; i++) {
        int u = Query(i);
        if (u > sz) {
            sz = u;
            in.push_back(i);
        }
        else {
            rest.push_back(i);
        }
    }
    solve0(in, rest);
}

Compilation message (stderr)

minerals.cpp: In function 'void solve(std::vector<int>&, std::vector<int>&)':
minerals.cpp:13:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for (int i = 0; i < in.size() / 2; i++) in1.push_back(in[i]);
      |                     ~~^~~~~~~~~~~~~~~
minerals.cpp:14:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (int i = in.size() / 2; i < in.size(); i++) in2.push_back(in[i]);
      |                                 ~~^~~~~~~~~~~
minerals.cpp: In function 'void solve0(std::vector<int>&, std::vector<int>&)':
minerals.cpp:39:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     for (int i = 0; i < in.size() / 2; i++) in1.push_back(in[i]);
      |                     ~~^~~~~~~~~~~~~~~
minerals.cpp:40:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |     for (int i = in.size() / 2; i < in.size(); i++) in2.push_back(in[i]);
      |                                 ~~^~~~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
• Subtask 4: 0 / 30
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 5
• Subtask 8: 0 / 5
• Subtask 9: 0 / 10