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>
using namespace std;
#define ll long long
#define pll pair<ll,ll>
#define ff first
#define ss second
#define endl "\n"
#define pb push_back
#define F(i,a,b) for(ll i=a;i<=b;i++)
const ll maxn=5e5+100;
const ll base=300;
const ll mod= 1e9+7 ;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
struct comp
{
bool operator() (const pair<pll,pll> &a,const pair<pll,pll> &b) const
{
auto p=a.ff;
auto p1=b.ff;
if (p.ff*p1.ss>p1.ff*p.ss)
return true;
if (p.ff*p1.ss<p1.ff*p.ss)
return false;
return (a.ss>b.ss);
}
};
set<ll> st[2];
ll a[maxn][2];
set<pair<pll,pll>,comp> stp;
ll pos[maxn];
ll val[maxn][2];
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
if (fopen("t.inp","r"))
{
freopen("test.inp","r",stdin);
freopen("test.out","w",stdout);
}
ll n, m;
cin>> n>> m;
ll cnt=0;
for (int i=1; i<=n; i++)
{
cin>> a[i][0];
st[0].insert(i);
if (i>=2)
stp.insert(make_pair(make_pair(a[i][0]-a[i-1][0],1),make_pair(i,0)));
}
for (int i=1; i<=m; i++)
{
cin>> a[i][1];
st[1].insert(i);
if (i>=2)
stp.insert(make_pair(make_pair(a[i][1]-a[i-1][1],1),make_pair(i,1)));
}
while (stp.size())
{
auto it=stp.begin();
stp.erase(it);
auto p=((*it).ss);
ll t=p.ss;
cnt++;
val[p.ff][t]=cnt;
st[t].erase(p.ff);
auto it1=st[t].lower_bound(p.ff);
if (it1!=st[t].end())
{
ll posnxt=(*it1);
ll posnw=p.ff;
it1--;
ll pospre=(*it1);
stp.erase(make_pair(make_pair(a[posnxt][t]-a[posnw][t],posnxt-posnw),make_pair(posnxt,t)));
stp.insert(make_pair(make_pair(a[posnxt][t]-a[pospre][t],posnxt-pospre),make_pair(posnxt,t)));
}
}
ll x=n;
ll y=m;
ll ans=0;
while (max(x,y)!=1)
{
if (x==1)
{
ans+=a[x][0];
y--;
}
else if (y==1)
{
ans+=a[y][1];
x--;
}
else
{
if (val[x][0]>val[y][1])
{
ans+=a[x][0];
y--;
}
else
{
ans+=a[y][1];
x--;
}
}
}
cout <<ans<<endl;
}
컴파일 시 표준 에러 (stderr) 메시지
kyoto.cpp: In function 'int main()':
kyoto.cpp:47:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
47 | freopen("test.inp","r",stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
kyoto.cpp:48:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
48 | freopen("test.out","w",stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
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