이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#include "teams.h"
using namespace std;
const int M = 1e5 + 1;
#define all(v) v.begin(), v.end()
int n,pre[M];
vector<int> V,seg[M*2];
void make(int v=1,int s=0,int e=n)
{
for (int i=s;i<e;i++)
seg[v].push_back(V[i]);
sort(all(seg[v]));
if (s+1==e)
return;
int mid=(s+e)/2,lc=v+1,rc=v+(mid-s)*2;
make(lc,s,mid);
make(rc,mid,e);
}
int get(int l,int r,int x,int v=1,int s=0,int e=n)
{
if (l>=e or r<=s)
return 0;
if (l<=s && e<=r)
{
int y=upper_bound(all(seg[v]),x)-begin(seg[v])+1;
return y;
}
int mid=(s+e)/2,lc=v+1,rc=v+(mid-s)*2;
return get(l,r,x,lc,s,mid)+get(l,r,x,rc,mid,e);
}
void init(int N,int A[],int B[])
{
n=N;
vector<pair<int,int>> v1;
for (int i=0;i<n;i++)
v1.push_back({B[i],A[i]}),pre[B[i]]++;
sort(v1.begin(),v1.end());
for (auto i:v1)
V.push_back(i.second);
for (int i=1;i<M;i++)
pre[i]+=pre[i-1];
make();
}
int can(int m,int k[])
{
map<int,int> cnt;
for (int i=0;i<m;i++)
cnt[k[i]]++;
vector<pair<int,int>> v;
for (auto i:cnt)
v.push_back(i);
m=v.size();
int val=0;
for (int i=0;i<m;i++)
{
int s=pre[v[i].first-1],e=n+1;
while (s+1<e)
{
int mid=(s+e)/2;
if (get(pre[v[i].first-1],mid,v[i].first)>=val+v[i].first*v[i].second)
e=mid;
else
s=mid;
}
if (e==n+1)
return 0;
if (i!=m-1)
val=get(pre[v[i+1].first-1],e,v[i].first);
}
return 1;
}
컴파일 시 표준 에러 (stderr) 메시지
teams.cpp: In function 'int get(int, int, int, int, int, int)':
teams.cpp:31:49: warning: conversion from '__gnu_cxx::__normal_iterator<int*, std::vector<int> >::difference_type' {aka 'long int'} to 'int' may change value [-Wconversion]
31 | int y=upper_bound(all(seg[v]),x)-begin(seg[v])+1;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
teams.cpp: In function 'int can(int, int*)':
teams.cpp:60:10: warning: conversion from 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
60 | m=v.size();
| ~~~~~~^~
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