Submission #494544

#	Time	Username	Problem	Language	Result	Execution time	Memory
494544		inksamurai	Checker (COCI19_checker)	C++17	12 / 110	1278 ms	129084 KiB

checker

#include <bits/stdc++.h>
// cut here
#ifdef _MSC_VER
#include <intrin.h>
#endif
 
namespace atcoder {
 
namespace internal {
 
int ceil_pow2(int n) {
    int x = 0;
    while ((1U << x) < (unsigned int)(n)) x++;
    return x;
}
 
int bsf(unsigned int n) {
#ifdef _MSC_VER
    unsigned long index;
    _BitScanForward(&index, n);
    return index;
#else
    return __builtin_ctz(n);
#endif
}
 
}  // namespace internal
 
}  // namespace atcoder
 
 
namespace atcoder {
 
template <class S, S (*op)(S, S), S (*e)()> struct segtree {
  public:
    segtree() : segtree(0) {}
    segtree(int n) : segtree(std::vector<S>(n, e())) {}
    segtree(const std::vector<S>& v) : _n(int(v.size())) {
        log = internal::ceil_pow2(_n);
        size = 1 << log;
        d = std::vector<S>(2 * size, e());
        for (int i = 0; i < _n; i++) d[size + i] = v[i];
        for (int i = size - 1; i >= 1; i--) {
            update(i);
        }
    }
 
    void set(int p, S x) {
        assert(0 <= p && p < _n);
        p += size;
        d[p] = x;
        for (int i = 1; i <= log; i++) update(p >> i);
    }
 
    S get(int p) {
        assert(0 <= p && p < _n);
        return d[p + size];
    }
 
    S prod(int l, int r) {
        assert(0 <= l && l <= r && r <= _n);
        S sml = e(), smr = e();
        l += size;
        r += size;
 
        while (l < r) {
            if (l & 1) sml = op(sml, d[l++]);
            if (r & 1) smr = op(d[--r], smr);
            l >>= 1;
            r >>= 1;
        }
        return op(sml, smr);
    }
 
    S all_prod() { return d[1]; }
 
    template <bool (*f)(S)> int max_right(int l) {
        return max_right(l, [](S x) { return f(x); });
    }
    template <class F> int max_right(int l, F f) {
        assert(0 <= l && l <= _n);
        assert(f(e()));
        if (l == _n) return _n;
        l += size;
        S sm = e();
        do {
            while (l % 2 == 0) l >>= 1;
            if (!f(op(sm, d[l]))) {
                while (l < size) {
                    l = (2 * l);
                    if (f(op(sm, d[l]))) {
                        sm = op(sm, d[l]);
                        l++;
                    }
                }
                return l - size;
            }
            sm = op(sm, d[l]);
            l++;
        } while ((l & -l) != l);
        return _n;
    }
 
    template <bool (*f)(S)> int min_left(int r) {
        return min_left(r, [](S x) { return f(x); });
    }
    template <class F> int min_left(int r, F f) {
        assert(0 <= r && r <= _n);
        assert(f(e()));
        if (r == 0) return 0;
        r += size;
        S sm = e();
        do {
            r--;
            while (r > 1 && (r % 2)) r >>= 1;
            if (!f(op(d[r], sm))) {
                while (r < size) {
                    r = (2 * r + 1);
                    if (f(op(d[r], sm))) {
                        sm = op(d[r], sm);
                        r--;
                    }
                }
                return r + 1 - size;
            }
            sm = op(d[r], sm);
        } while ((r & -r) != r);
        return 0;
    }
 
  private:
    int _n, size, log;
    std::vector<S> d;
 
    void update(int k) { d[k] = op(d[2 * k], d[2 * k + 1]); }
};
 
}  // namespace atcoder
// cut here 
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) a.begin(),a.end()
#define rep(i,n) for(int i=0;i<n;i++)
#define crep(i,x,n) for(int i=x;i<n;i++)
#define drep(i,n) for(int i=n-1;i>=0;i--)
#define vec(...) vector<__VA_ARGS__>
#define _3oKjziw ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0)
using namespace std;
typedef long long ll;
typedef long double ld;
using pii=pair<int,int>;
using vi=vector<int>;

pii op(pii l,pii r){
	return {min(l.fi,r.fi),max(l.se,r.se)};
}
pii e(){
	return {1e9,-1};
}

void slv(){
	int n;
	cin>>n;
	string s;
	cin>>s;
	vec(vec(pii)) adj(n);
	rep(i,n-3){
		int u,v,_c;
		cin>>u>>v>>_c;
		u--,v--;
		adj[u].pb({v,_c});
		adj[v].pb({u,_c});
	}

	atcoder::segtree<pii,op,e> seg(n);
	rep(v,n){
		for(auto edge : adj[v]){
			int u=edge.fi;
			seg.set(v,op(seg.get(v),{u,u}));
		}
	}
	bool pok=1;
	rep(v,n){
		for(auto edge : adj[v]){
			int u=edge.fi;
			if(v>u) continue;
			pii p=seg.prod(v+1,u);
			if(p.fi<v or p.se>u){
				pok=0;
			}
		}
	}
	if(not pok){
		cout<<"neispravna triangulacija\n";
		return;
	}
	rep(i,n-1){
		adj[i].pb({i+1,s[i]-'0'});	
		adj[i+1].pb({i,s[i]-'0'});
	}
	adj[n-1].pb({0,s[n-1]-'0'});
	adj[0].pb({n-1,s[n-1]-'0'});
	std::map<pii,int> mp;
	rep(v,n){
		for(auto edge : adj[v]){
			int u=edge.fi;
			mp[{v,u}]=edge.se;
		}
	}
	pok=1;
	rep(v,n){
		for(auto edge : adj[v]){
			int u=edge.fi;
			for(auto edge1 : adj[u]){
				int u1=edge1.fi;
				if(mp.find({v,u1})!=mp.end()){
					if(mp[{v,u}]==mp[{u,u1}] or mp[{v,u}]==mp[{v,u1}] or mp[{u1,u}]==mp[{u1,v}]){
						pok=0;
					}
				}
			}
		}
	}
	if(not pok){
		cout<<"neispravno bojenje\n";
		return;
	}
	cout<<"tocno\n";
}

int main(){
_3oKjziw;
	int t;
	cin>>t;
	rep(cs,t)
		slv();
//	
	return 0;
}

• Subtask 1: 12 / 12
• Subtask 2: 0 / 17
• Subtask 3: 0 / 23
• Subtask 4: 0 / 23
• Subtask 5: 0 / 35