Submission #72687

#	Time	Username	Problem	Language	Result	Execution time	Memory
72687		gs14004	Judge Against Wrong Code (FXCUP3_judge)	C++17	100 / 100	716 ms	148024 KiB

judge

#include <bits/stdc++.h>
using namespace std;
typedef long long lint;
typedef long double llf;
typedef pair<int, int> pi;
const int MAXN = 1050000;
 
int m, n1, n2, a[MAXN], b[MAXN];
char buf[22];
 
int getMask(){
	scanf("%s",buf);
	int ans = 0;
	for(int i=0; buf[i]; i++){
		if(buf[i] != '.') ans |= (1<<i);
	}
	return ans;
}
 
int dp[MAXN];
int func[MAXN], clos[MAXN], cnt[MAXN], ret[MAXN];
 
using base = int;
void fft(vector<base> &a, bool inv){
	int n = a.size(), j = 0;
	for(int i=1; i<n; i++){
		int bit = (n >> 1);
		while(j >= bit){
			j -= bit;
			bit >>= 1;
		}
		j += bit;
		if(i < j) swap(a[i], a[j]);
	}
	for(int i=2; i<=n; i<<=1){
	//	int step = n / i;
		for(int j=0; j<n; j+=i){
			for(int k=0; k<i/2; k++){
				base u = a[j+k], v = a[j+k+i/2];
				a[j+k] = u;
				if(!inv) a[j+k+i/2] = u+v;
				else a[j+k+i/2] = v -u;
			}
		}
	}
}
 
void convolute(){
	vector<int> ans;
	for(int i=0; i<(1<<m); i++){
		ans.push_back(clos[i]);
	}
	fft(ans, 0);
	for(int i=0; i<(1<<m); i++) ans[i] *= ans[i];
	fft(ans, 1);
	for(int i=0; i<(1<<m); i++) clos[i] = ans[i];
}
 
void make_or_closure(){
	for(int i=0; i<5; i++){
		convolute();
		for(int j=0; j<(1<<m); j++) clos[j] = min(clos[j], 1);
	}
}
 
int main(){
	scanf("%d",&m);
	scanf("%d",&n1);
	for(int i=0; i<n1; i++){
		a[i] = getMask();
		clos[a[i]] = 1;
	}
	clos[0] = 1;
	make_or_closure();
	scanf("%d",&n2);
	for(int i=0; i<n2; i++){
		cnt[getMask()]++;
	}
	for(int i=0; i<m; i++){
		for(int j=0; j<(1<<m); j++){
			if((j >> i) & 1){
				cnt[j] += cnt[j ^ (1<<i)];
			}
		}
	}
	for(int j=0; j<(1<<m); j++){
		int func = n2 - cnt[((1<<m) - 1) ^ j];
		if(clos[j]) ret[func] = 1;
	}
	for(int i=1; i<=n2; i++) putchar(ret[i] ? 'o' : 'x');
	puts("");
}

Compilation message (stderr)

judge.cpp: In function 'int getMask()':
judge.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",buf);
  ~~~~~^~~~~~~~~~
judge.cpp: In function 'int main()':
judge.cpp:67:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&m);
  ~~~~~^~~~~~~~~
judge.cpp:68:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n1);
  ~~~~~^~~~~~~~~~
judge.cpp:75:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n2);
  ~~~~~^~~~~~~~~~

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