Submission #1114354

#	Time	Username	Problem	Language	Result	Execution time	Memory
1114354		modwwe	Drivers (BOI24_drivers)	C++17	100 / 100	116 ms	25416 KiB

Main

#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 mask(k) (1<<k)
#define mp make_pair
#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 = 1e16;
const ll 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;

};
ll 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,p ;
int kk;
int el = 19;
main()
{
    if(fopen(task".inp","r"))
    {
        fin(task);
        fou(task);
    }
    NHP
    /// cin>>s1;
    // modwwe
    phongbeo();
    // checktime
}
struct dsu
{
    ib ds[200001];
    void reset()
    {
        for(int i=1; i<=n; i++)
            ds[i]= {1,i};
    }
    int get(int x)
    {
        if(ds[x].b!=x) return ds[x].b=get(ds[x].b);
        return x;
    }
    void noi(int x,int y)
    {
        x=get(x);
        y=get(y);
        if(x==y) return;
        if(ds[x].a<ds[y].a) swap(x,y);
        ds[x].a+=ds[y].a;
        ds[y].b=x;
    }
} ds;
id a[200001];
id ask[200001];
int cc[200001];
bool cmp(id a,id b)
{
    return a.c<b.c;
}
void phongbeo()
{
    cin>>n>>m>>k;
    for(int i=1; i<=m; i++)
        cin>>a[i].a>>a[i].b>>a[i].c;
    sort(a+1,a+1+m,cmp);
    for(int i=1; i<=k; i++)
        cin>>ask[i].a>>ask[i].b>>ask[i].c,ask[i].d=i;
    sort(ask+1,ask+1+k,cmp);
    ds.reset();
    l=1;
    for(int i=1; i<=k; i++)
    {
        while(l<=m&&a[l].c<=ask[i].c)
        {
            ds.noi(a[l].a,a[l].b);
            l++;
        }
        if(ds.get(ask[i].a)==ds.get(ask[i].b))
            cc[ask[i].d]=1;
        else cc[ask[i].d]=0;
    }

    for(int i=1; i<=k; i++)
    {
        if(!cc[i])cout<<"NE";
        else cout<<"TAIP";
        down
    }
}

Compilation message (stderr)

Main.cpp:75:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   75 | main()
      | ^~~~
Main.cpp: In function 'int main()':
Main.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)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
Main.cpp:79:9: note: in expansion of macro 'fin'
   79 |         fin(task);
      |         ^~~
Main.cpp:14:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 | #define fou(x) freopen(x".ans","w",stdout)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~~
Main.cpp:80:9: note: in expansion of macro 'fou'
   80 |         fou(task);
      |         ^~~

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 23 / 23
• Subtask 5: 45 / 45