Submission #850929

#	Time	Username	Problem	Language	Result	Execution time	Memory
850929		vjudge1	Bubble Sort 2 (JOI18_bubblesort2)	C++17	0 / 100	537 ms	600 KiB

bubblesort2

#include "bubblesort2.h"
#include<bits/stdc++.h>
using namespace std;
std::vector<int> countScans(std::vector<int> A,std::vector<int> X,std::vector<int> V){
	int Q=X.size();
	//cout << Q << ' ' << A.size() << endl;
	vector<int> answer;
	int tot = 0;
	for(int i = 0; i < A.size(); i++) {
        for(int j = i-1; j >= 0; j--) {
            if(A[j] > A[i]) tot++;
        }
        for(int j = i+1; j < A.size(); j++) {
            if(A[j] < A[i]) tot++;
        }
	}
	//cout << tot << 'k' << endl;
	for(int i = 0; i < Q; i++) {
        for(int j = X[i]-1; j>= 0; j--) {
            if(A[j] > A[X[i]]) tot-= 2;
            if(A[j] > V[i]) tot+= 2;
        }
        for(int j = X[i]+1; j < A.size(); j++) {
            if(A[j] < A[X[i]]) tot-= 2;
            if(A[j] < V[i]) tot+= 2;
        }
        A[X[i]] = V[i];
      //  cout << X[i] << ' ' << V[i] << ' ' << tot/2 << 'h' << endl;
        answer.push_back(tot/2);
	}
	return answer;
}

Compilation message (stderr)

bubblesort2.cpp: In function 'std::vector<int> countScans(std::vector<int>, std::vector<int>, std::vector<int>)':
bubblesort2.cpp:9:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |  for(int i = 0; i < A.size(); i++) {
      |                 ~~^~~~~~~~~~
bubblesort2.cpp:13:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |         for(int j = i+1; j < A.size(); j++) {
      |                          ~~^~~~~~~~~~
bubblesort2.cpp:23:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         for(int j = X[i]+1; j < A.size(); j++) {
      |                             ~~^~~~~~~~~~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 21
• Subtask 3: 0 / 22
• Subtask 4: 0 / 40