제출 #1109358

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1109358		modwwe	Stranded Far From Home (BOI22_island)	C++17	100 / 100	178 ms	38588 KiB

island

#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC optimize("conserve-stack")
#include<bits/stdc++.h>
#define int long long
#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".ans","w",stdout)
#define pb push_back
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
#define getchar_unlocked getchar

inline int scan()
{
    char c = getchar_unlocked();
    int x = 0;
    while (c < '0' || c > '9')
    {
        c = getchar_unlocked();
    }
    while (c >= '0' && c <= '9')
    {
        x = (x << 1) + (x << 3) + c - '0';
        c = getchar_unlocked();
    }
    return x;
}

void phongbeo();
const int inf = 1e9;
const int mod2 = 1e9 + 7;
const int  mod1 = 998244353;
const ll base=67;
int add(int x,int y)
{
    if(x+y>=mod2) x-=mod2;
    if(x+y<0) x+=mod2;
    return x+y;
}
struct icd
{
    long double a;
    int b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a, b, c;
};
struct id
{
    int a, b, c, d;
};
struct ie
{
    int a, b, c, d, e;

};

int n, m, s1, s2, s4, s3, sf, k, s5, s6, mx, s7, s8, s9, mx2, res, dem2 = 0, dem = 0, s33, dem3, dem4, mid, l2, r2, center;
int  i, s10, s12,k1,k2,k3,s11,t,lim,w,l,r;
int kk;
int el = 19;

main()
{
    if(fopen(task".inp","r"))
    {
        fin(task);
      //  fou(task);
    }
    NHP
    /// cin>>s1;
    // modwwe
    phongbeo(),down
    // checktime
}
bool cmp(ib a,ib b)
{
    return a.a<b.a;
}
vector<int> v[200001];
bool c[200001];
ib a[200001];
struct dshi
{
    vector<int> v[200001];
    ic dsu[200001];
    void init()
    {
        for(int i=1; i<=n; i++)
            dsu[i]= {1,i,a[i].a},v[i].pb(i);
    }
    int get(int x)
    {
        if(dsu[x].b!=x)return dsu[x].b=get(dsu[x].b);
        return x;
    }
    void noi(int x,int y)
    {
        x=get(x);
        y=get(y);
        if(x==y) return;
        if(v[x].size()<v[y].size())swap(x,y);
        for(auto f:v[y])
            v[x].pb(f);
        if(dsu[x].a<dsu[y].a)swap(v[x],v[y]),swap(x,y);
        dsu[x].a+=dsu[y].a;
        dsu[x].c+=dsu[y].c;
        dsu[y].b=x;
        vector<int>().swap(v[y]);
    }
    void del(int x)
     {
         x=get(x);
         for(auto f:v[x])
            c[f]=1;
                 vector<int>().swap(v[x]);
     }
}ds;
void phongbeo()
{
    cin>>n>>m;
    for(int i=1; i<=n; i++)cin>>a[i].a,a[i].b=i;
    for(int i=1; i<=m; i++)
    {
        cin>>l>>r;
        if(a[l].a>=a[r].a)v[l].pb(r);
        else v[r].pb(l);
    }
    ds.init();
    sort(a+1,a+1+n,cmp);
 for(int i=1;i<=n;i++)
    {
        for(auto x:v[a[i].b])
        {
            s2=ds.get(x);
             if(ds.dsu[s2].c<a[i].a)
             {
                 ds.del(s2);
             }
        }
        for(auto x:v[a[i].b])
        {
             ds.noi(a[i].b,x);
        }
    }
     for(int i=1;i<=n;i++)
        cout<<1-c[i];
}

컴파일 시 표준 에러 (stderr) 메시지

island.cpp:76:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   76 | main()
      | ^~~~
island.cpp: In function 'int main()':
island.cpp:13:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define fin(x) freopen(x".inp","r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
island.cpp:80:9: note: in expansion of macro 'fin'
   80 |         fin(task);
      |         ^~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 30 / 30
• Subtask 5: 35 / 35