Submission #695338

#	Time	Username	Problem	Language	Result	Execution time	Memory
695338		Nhoksocqt1	Geppetto (COCI15_geppetto)	C++17	80 / 80	13 ms	328 KiB

geppetto

#include<bits/stdc++.h>
using namespace std;

#define inf 0x3f3f3f3f
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#define fi first
#define se second
typedef long long ll;
typedef pair<int, int> ii;

template<class X, class Y>
	inline bool maximize(X &x, const Y &y) {return (x < y ? x = y, 1 : 0);}
template<class X, class Y>
	inline bool minimize(X &x, const Y &y) {return (x > y ? x = y, 1 : 0);}

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int Random(int l, int r) {
    return uniform_int_distribution<int>(l, r)(rng);
}

int readInt() {
	bool minus = false;
	int result = 0;
	char ch;
	ch = getchar();
	while(true) {
		if(ch == '-') break;
		if(ch >= '0' && ch <= '9') break;
		ch = getchar();
	}

	if(ch == '-') minus = true; else result = ch - '0';
	while(true) {
		ch = getchar();
		if (ch < '0' || ch > '9') break;
		result = result * 10 + (ch - '0');
	}

	if(minus)
		return -result;
	else
		return result;
}

const int MAXN = 20;

int maskNot[MAXN], numIngredient, numPair;

void process() {
    cin >> numIngredient >> numPair;
    for (int i = 0; i < numPair; ++i) {
        int u, v;
        cin >> u >> v;
        maskNot[u - 1] |= (1 << (v - 1));
        maskNot[v - 1] |= (1 << (u - 1));
    }

    int res(0);
    for (int mask = 0; mask < (1 << numIngredient); ++mask) {
        ++res;
        for (int i1 = mask; i1 > 0; i1 ^= i1 & -i1) {
            int i = __builtin_ctz(i1 & -i1);
            if((maskNot[i] & mask) > 0) {
                --res;
                break;
            }
        }
    }

    cout << res;
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

//    freopen("geppetto.inp", "r", stdin);
//    freopen("geppetto.out", "w", stdout);

    process();
    return 0;
}

Compilation message (stderr)

geppetto.cpp:6: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    6 | #pragma GCC optimization ("O3")
      | 
geppetto.cpp:7: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    7 | #pragma GCC optimization ("unroll-loops")
      |

• Subtask 1: 80 / 80