Submission #719852

#	Time	Username	Problem	Language	Result	Execution time	Memory
719852		jcelin	Dijamant (COI16_dijament)	C++14	100 / 100	324 ms	852 KiB

dijament

#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, b) for (int i = int(a); i < int(b); i++)
#define REP(i, n) FOR(i, 0, n)
int n, nod;
map<string, int> id;
bitset<1007> gph[1007], rv[1007], prec[1007], emp, ch;
bool check(){
	FOR(i, 1, nod + 1) if(emp[i] and ((~gph[i] & prec[i]) & emp).count()) return 1;
	return 0;
}
int main(){
	cin >> n;
	REP(i, n){
		string cur, e;
		cin >> cur >> e;
		if(id[cur]){
			while(1){
				cin >> e;
				if(e == ";") break;	
			}
			cout << "greska\n";
			continue;
		}
		
		emp.reset();
		int fl = 1;
		while(1){
			cin >> e;
			if(e == ";") break;
			fl = min(fl, id[e]);
			emp[id[e]] = 1;
		}
		
		if(fl == 0 or check()){
			cout << "greska\n";
			continue;
		}
		
		id[cur] = ++nod;
		REP(i, nod) if(emp[i]) emp |= gph[i];
		REP(i, nod) if(emp[i]) prec[nod] |= rv[i], rv[i][nod] = 1; 
		gph[nod] = emp;
		cout << "ok\n";
	}
}

• Subtask 1: 13 / 13
• Subtask 2: 14 / 14
• Subtask 3: 29 / 29
• Subtask 4: 44 / 44