Submission #892730

#	Time	Username	Problem	Language	Result	Execution time	Memory
892730		Lincito_31	Arranging Shoes (IOI19_shoes)	C++14	85 / 100	1081 ms	3028 KiB

shoes

#include <bits/stdc++.h>
#include "shoes.h"
using namespace std;
long long x=0;
long long count_swaps(vector<int> s) {
    bool jaja=true;
    bool ja=true;
    int xx=s.size()/2;
    for(int i=0;i<xx;i++){
        if(!(s[i]<0 && s[i]==-s[i+xx])){
            jaja=false;
            break;
        }
    }
    int ayu=s[0];
    for(int i=0;i<s.size();i++){
        if(!(s[i]==ayu || s[i]==-ayu)){
            ja=false;
            break;
        }
    }
    if(jaja || ja){
        vector<int> xd_po;
        vector<int> xd_ne;
        for(int i=0;i<s.size();i++){
            if(s[i]<0){
                if(i%2!=0){
                    xd_ne.push_back(i);
                }
            }else{
                if(i%2==0){
                    xd_po.push_back(i);
                }
            }
        }
        for(int i=0;i<xd_po.size();i++){
            if(xd_po[i]>xd_ne[i]){
                x+=xd_po[i]-xd_ne[i];
            }else{
                x+=xd_ne[i]-xd_po[i];
            }
        }
    }else{
        int con=0;
        while(con<s.size()){
            int temp=s[con];
            if(temp==0){
                con++;
                continue;
            }
            if(temp<0){
                int cero=0;
                for(int i=con+1;i<s.size();i++){
                    if(s[i]==0){
                        cero++;
                    }
                    if(s[i]==-temp){
                        x+=i-con-1-cero;
                        s[i]=0;
                        break;
                    }
                }
                s[con]=0;
            }else{
                int cero=0;
                for(int i=con+1;i<s.size();i++){
                    if(s[i]==0){
                        cero++;
                    }
                    if(s[i]==-temp){
                        x+=i-con-cero;
                        s[i]=0;
                        break;
                    }
                }
                s[con]=0;
            }
            con++;
        }
    }
	return x;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for(int i=0;i<s.size();i++){
      |                 ~^~~~~~~~~
shoes.cpp:25:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         for(int i=0;i<s.size();i++){
      |                     ~^~~~~~~~~
shoes.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         for(int i=0;i<xd_po.size();i++){
      |                     ~^~~~~~~~~~~~~
shoes.cpp:45:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         while(con<s.size()){
      |               ~~~^~~~~~~~~
shoes.cpp:53:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |                 for(int i=con+1;i<s.size();i++){
      |                                 ~^~~~~~~~~
shoes.cpp:66:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |                 for(int i=con+1;i<s.size();i++){
      |                                 ~^~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 0 / 15