제출 #155976

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
155976		GioChkhaidze	Arranging Shoes (IOI19_shoes)	C++14	컴파일 에러	0 ms	0 KiB

shoes

#include "shoes.h"
using namespace std;
const int N=100005;
int a[2*N],G[2*N],f1[2*N],f2[2*N];

void Upd(int x,int dl) {
	while (dl<=2*N) {
		G[x]+=dl;
		x+=(x & -x);
	}
}

void Get(int x) {
	int res=0;
	while (0<dl) {
		res+=G[x];
		x-=(x & -x);
	}
	return res;
}

long long count_swaps(std::vector<int> s) {
	long long ans=0;
	for (int i=0; i<s.size(); i++) {
		a[i+1]=s[i];
		if (a[i+1]>0) f1[a[i+1]]=i+1;
		if (a[i+1]<0) f2[-a[i+1]]=i+1;
		Upd(i+1,1);
	}
	
	for (int i=1; i<=s.size()/2; i++) {
		int l=1,r=2*(s.size()),mid,idx=-1;
		
		while (l<=r) {
			mid=(l+r)/2;
			if (1<=Get(mid)) { idx=mid; r=mid-1; } 
								   else l=mid+1;
		}
		
		if (a[idx]<0) {
			int x=-a[idx];
			ans+=Get(f1[x]-1)-1;
			Upd(idx,-1);
			Upd(f1[x],-1);
		}
			else {
			int x=a[idx];
			ans+=Get(f2[x]-1);
			Upd(idx,-1);
			Upd(f2[x],-1);
		}
	}
	
	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'void Get(int)':
shoes.cpp:15:11: error: 'dl' was not declared in this scope
  while (0<dl) {
           ^~
shoes.cpp:19:9: error: return-statement with a value, in function returning 'void' [-fpermissive]
  return res;
         ^~~
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:24:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<s.size(); i++) {
                ~^~~~~~~~~
shoes.cpp:31:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=1; i<=s.size()/2; i++) {
                ~^~~~~~~~~~~~
shoes.cpp:36:9: error: invalid operands of types 'int' and 'void' to binary 'operator<='
    if (1<=Get(mid)) { idx=mid; r=mid-1; } 
        ~^~~~~~~~~~
shoes.cpp:42:21: error: invalid operands of types 'void' and 'int' to binary 'operator-'
    ans+=Get(f1[x]-1)-1;
         ~~~~~~~~~~~~^~
shoes.cpp:48:7: error: invalid operands of types 'long long int' and 'void' to binary 'operator+'
    ans+=Get(f2[x]-1);
    ~~~^~~~~~~~~~~~~~
shoes.cpp:48:20: error:   in evaluation of 'operator+=(long long int, void)'
    ans+=Get(f2[x]-1);
                    ^