제출 #494937

#제출 시각아이디문제언어결과실행 시간메모리
494937luka1234Arranging Shoes (IOI19_shoes)C++14
컴파일 에러
0 ms0 KiB
#include "shoes.h" #include<bits/stdc++.h> #define ll long long #define ff first #define ss second using namespace std; ll maxn=200001; ll f[200001]; ll getsum(ll v){ ll ans=0; for(ll i=v;i>=1;i=(i&(i-1))){ ans+=f[i]; } return ans; } void update(ll v,ll x){ for(ll i=v;i<=maxn;i=2*i-(i&(i-1))){ f[i]+=x; } } long long count_swaps(std::vector<ll> s) { ll n=s.size()/2; ll ans=0; vector<pair<ll,ll>> v; vector<pair<ll,ll>> inde[maxn]; for(ll i=0;i<s.size();i++){ inde[abs(s[i])].push_back({s[i],i}); } for(ll i=1;i<=n;i++){ sort(inde[i].begin(),inde[i].end()); for(ll j=0;j<inde[i].size()/2;j++){ ll l=inde[i][j].ss; ll r=inde[i][j+inde[i].size()/2].ss; if(l>r){ swap(l,r); ans++; } v.push_back({l+1,r+1}); } } for(ll i=1;i<=2*n;i++) update(i,1); sort(v.begin(),v.end()); for(pair<ll,ll> i:v){ ans+=getsum(i.ss-1)-getsum(i.ff); update(i.ff,-1); update(i.ss,-1); } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'long long int count_swaps(std::vector<long long int>)':
shoes.cpp:26:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |  for(ll i=0;i<s.size();i++){
      |             ~^~~~~~~~~
shoes.cpp:31:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |   for(ll j=0;j<inde[i].size()/2;j++){
      |              ~^~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccIkzuYd.o: in function `main':
grader.cpp:(.text.startup+0x29d): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status