Submission #72192

#	Time	Username	Problem	Language	Result	Execution time	Memory
72192		이시대의진정한망겜스타투 (#118)	Judge Against Wrong Code (FXCUP3_judge)	C++17	100 / 100	596 ms	101832 KiB

judge

#include<cstdio>
#include<algorithm>
using namespace std;
int K, n, m, A[1<<20], B[1<<20], C[21][1<<20], CA[1<<20], CB[1<<20], vis[1<<20];
char p[22], q[10] = "xo";
void Calc(int *a) {
	int i, j;
	for (i = 0; i < (1 << K); i++)C[0][i] = a[i];
	for (i = 0; i < K; i++) {
		for (j = 0; j < (1 << K); j++) {
			if ((j >> i) & 1) {
				C[i + 1][j] = C[i][j] + C[i][j ^ (1 << i)];
			}
			else C[i + 1][j] = C[i][j];
		}
	}
}
int main() {
	int i, j;
	scanf("%d%d", &K, &n);
	for (i = 0; i < n; i++) {
		scanf("%s", p);
		int s = 0;
		for (j = 0; j < K; j++) {
			if (p[j] == 'o')s += (1 << j);
		}
		A[s]++;
	}
	scanf("%d", &m);
	for (i = 0; i < m; i++) {
		scanf("%s", p);
		int s = 0;
		for (j = 0; j < K; j++) {
			if (p[j] == 'x')s += (1 << j);
		}
		B[s]++;
	}
	Calc(A);
	for (i = 0; i < (1 << K); i++)CA[i] = C[K][i];
	Calc(B);
	for (i = 0; i < (1 << K); i++)CB[i] = C[K][i];
	for (i = 1; i < (1 << K); i++) {
		for (j = 0; j < K; j++) {
			if (((i >> j) & 1) && CA[i] == CA[i ^ (1 << j)])break;
		}
		if (j == K) {
			vis[m - CB[(1 << K) - 1 - i]] = 1;
		}
	}
	for (i = 1; i <= m; i++)printf("%c", q[vis[i]]);
	puts("");
	return 0;
}


/*#include<cstdio>
#include<algorithm>
#include<vector>
#define N_ 303000
#define M_ 1010000
#define INF 99999999
using namespace std;
int n;
struct Edge {
	int b, e, f;
};
class MaxFlow {
public:
	Edge E[M_ * 2];
	vector<int>G[N_];
	int Level[N_], Q[N_], PV[N_], source, sink, n, flow, EC;
	void init(int N, int S, int T) {
		n = N, flow = EC = 0;
		source = S, sink = T;
		for (int i = 0; i <= N; i++)G[i].clear();
	}
	void Add_Edge(int a, int b, int f) {
		G[a].push_back(EC);
		G[b].push_back(EC + 1);
		E[EC++] = { a,b,f};
		E[EC++] = { b,a,0};
	}
	bool GetLevel() {
		int i;
		for (i = 1; i <= n; i++)Level[i] = -1;
		int head = 0, tail = 0;
		Q[++tail] = source, Level[source] = 0;
		while (head < tail) {
			int x = Q[++head];
			for (auto &y : G[x]) {
				if (E[y].f && Level[E[y].e] == -1) {
					Q[++tail] = E[y].e;
					Level[E[y].e] = Level[x] + 1;
				}
			}
		}
		return Level[sink] != -1;
	}
	int BlockFlow(int a, int f) {
		if (a == sink)return f;
		for (int &i = PV[a]; i >= 0; i--) {
			int x = G[a][i];
			if (E[x].f && Level[E[x].e] == Level[a] + 1) {
				int t = BlockFlow(E[x].e, min(f, E[x].f));
				if (t) {
					E[x].f -= t;
					E[x ^ 1].f += t;
					return t;
				}
			}
		}
		return 0;
	}
	void Dinic() {
		int t;
		while (GetLevel()) {
			for (int i = 1; i <= n; i++)PV[i] = G[i].size() - 1;
			while (t = BlockFlow(source, INF)) flow += t;
		}
	}
}G1;

vector<int>E[N_];

int Col[N_];

void DFS(int a, int pp, int col) {
	Col[a] = col;
	for (auto &x : E[a]) {
		if (x == pp)continue;
		DFS(x, a, 3 - col);
	}
}

int main() {
	freopen("input.txt", "r", stdin);
	int i, a, b;
	scanf("%d", &n);
	G1.init(n + 2, n + 1, n + 2);
	for (i = 1; i < n; i++) {
		scanf("%d%d", &a, &b);
		E[a].push_back(b);
		E[b].push_back(a);
	}
	DFS(1, 0, 1);
	for (i = 1; i <= n; i++) {
		for (auto &x : E[i]) {
			if (Col[i] == 1) G1.Add_Edge(i, x, 1);
		}
		if (Col[i] == 1)G1.Add_Edge(G1.source, i, n - 1 - E[i].size());
		else G1.Add_Edge(i, G1.sink, n - 1 - E[i].size());
	}
	G1.Dinic();
	printf("%d\n", G1.flow);
	for (i = 1; i <= n; i++) {
		if (Col[i] == 1) {
			for (auto &x : G1.G[i]) {
				Edge tp = G1.E[x];
				if (tp.e >= 1 && tp.e <= n && !tp.f) {
				}
			}
		}
	}

}*/

Compilation message (stderr)

judge.cpp: In function 'int main()':
judge.cpp:20:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &K, &n);
  ~~~~~^~~~~~~~~~~~~~~~
judge.cpp:22:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", p);
   ~~~~~^~~~~~~~~
judge.cpp:29:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &m);
  ~~~~~^~~~~~~~~~
judge.cpp:31:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", p);
   ~~~~~^~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 39 / 39
• Subtask 3: 51 / 51