이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "train.h"
#include <bits/stdc++.h>
using namespace std;
#define maxn 5005
#define pb push_back
typedef vector<int> vi;
int n,m,cnt[maxn];
bool done[maxn],added[maxn],in[maxn];
vi RAL[maxn],AL[maxn],a,r,u,v,ans;
void expand(vi &v,int p){
for(int i=0;i<n;++i){
cnt[i]=AL[i].size();
added[i]=false;
}
vi toadd;
for(int x:v){
toadd.pb(x);
added[x]=true;
}
while(!toadd.empty()){
int u=toadd.back();
toadd.pop_back();
for(int v:RAL[u]){
--cnt[v];
if(!added[v]&&(a[v]==p||cnt[v]==0)){
toadd.pb(v);
added[v]=true;
}
}
}
v.clear();
for(int i=0;i<n;++i){
if(added[i])v.pb(i);
}
}
bool step(){
int rem=0;
vi charge;
for(int i=0;i<n;++i){
if(done[i])continue;
AL[i].clear();
RAL[i].clear();
in[i]=false;
++rem;
if(r[i]==1)charge.pb(i);
}
if(rem==0)return false;
for(int i=0;i<m;++i){
if(!done[u[i]]&&!done[v[i]]){
AL[u[i]].pb(v[i]);
RAL[v[i]].pb(u[i]);
}
}
expand(charge,1);
if(charge.size()==rem){
for(int x:charge)ans[x]=1;
return false;
}
for(int x:charge)in[x]=true;
vector<int> other;
for(int i=0;i<n;++i){
if(!done[i]&&!in[i])other.pb(i);
}
expand(other,0);
for(int x:other)done[x]=true;
return true;
}
vi who_wins(vi _a,vi _r,vi _u,vi _v){
a=_a,r=_r,u=_u,v=_v;
n=a.size(),m=u.size();
ans.resize(n);
while(step());
return ans;
}
컴파일 시 표준 에러 (stderr) 메시지
train.cpp: In function 'bool step()':
train.cpp:60:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
60 | if(charge.size()==rem){
| ~~~~~~~~~~~~~^~~~~
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