Submission #428336

#	Time	Username	Problem	Language	Result	Execution time	Memory
428336		A_D	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> vec;
long long ans=0,cnt=0;
vector<int> s;
void fix(int x)
{
    for(int i=0;i<s.size();i++){
        if(s[i]==-x){
            for(int j=i-1;j>=cnt;j--){
                ans++;
                swap(s[j],s[j+1]);
            }
        }
    }
    cnt++;
    for(int i=0;i<s.size();i++){
        if(s[i]==x){
            for(int j=i-1;j>=cnt;j--){
                ans++;
                swap(s[j],s[j+1]);
            }
        }
    }
    cnt++;
}
long long count_swaps(std::vector<int> S){
    s=S;
    vec.clear();ans=0;cnt=0;
    for(int i=0;i<s.size();i++){
        if(s[i]<0){
            vec.push_back(abs(s[i]));
        }
    }
    int l=0,r=vec.size-1;
    while(l<=r){
        if((r-l)%2){
            fix(l);
            l++;
        }
        else{
            fix(r);
            r--;
        }
    }
    return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'void fix(int)':
shoes.cpp:9:18: 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<s.size();i++){
      |                 ~^~~~~~~~~
shoes.cpp:18:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for(int i=0;i<s.size();i++){
      |                 ~^~~~~~~~~
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(int i=0;i<s.size();i++){
      |                 ~^~~~~~~~~
shoes.cpp:36:19: error: invalid use of member function 'std::vector<_Tp, _Alloc>::size_type std::vector<_Tp, _Alloc>::size() const [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::size_type = long unsigned int]' (did you forget the '()' ?)
   36 |     int l=0,r=vec.size-1;
      |               ~~~~^~~~
      |                       ()