#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#include <bits/stdc++.h>
using namespace std;
#define sqr 270
//#define mp make_pair
#define mid (l+r)/2
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define ins insert
#define era erase
#define C continue
#define mem(dp,i) memset(dp,i,sizeof(dp))
#define mset multiset
#define all(x) x.begin(), x.end()
#define gc getchar_unlocked
typedef long long ll;
typedef short int si;
typedef long double ld;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;
const ll inf=1e18;
const ll mod=1e9+7;
const ld pai=acos(-1);
int n , m ;
string s ;
int l [20009] , r [20009] ;
int on [20009] , ret [20009] , done [20009] ;
int val ( string x ) {
int ans = 0 ;
for ( int i = 1 ; i < x.size() ; i ++ ) {
ans *= 10 ;
ans += x [i] - '0' ;
}
ans -- ;
if ( x [0] == 'c' ) ans += n ;
return ans ;
}
void dfs ( int node ) {
if ( done [node] ) return ;
done [node] = 1 ;
if ( node < n ) return ;
dfs ( l [node] ) ;
dfs ( r [node] ) ;
}
int main () {
fast ;
mem ( on , -1 ) ;
cin >> n >> m >> s ;
for ( int i = 0 ; i < m ; i ++ ) {
if ( s [i] == '?' ) C ;
on [i+n] = ( s [i] == '1' ) ;
}
for ( int i = n ; i < n + m ; i ++ ) {
string A , B ;
cin >> A >> B ;
l [i] = val ( A ) ;
r [i] = val ( B ) ;
}
for ( int i = n ; i < n + m ; i ++ ) {
if ( done [i] || on [i] != 0 ) C ;
dfs ( i ) ;
}
for ( int i = 0 ; i < n + m ; i ++ ) {
if ( done [i] ) on [i] = 0 ;
}
for ( int i = n ; i < n + m ; i ++ ) {
if ( on [i] != -1 ) C ;
mem ( done , 0 ) ;
dfs ( i ) ;
for ( int j = 0 ; j < n + m ; j ++ ) {
if ( on [j] == 0 ) done [j] = 1 ;
if ( done [j] ) ret [j] = 0 ;
else ret [j] = 1 ;
}
for ( int j = n ; j < n + m ; j ++ ) {
ret [j] = ( ret [ l[j] ] | ret [ r[j] ] ) ;
}
int z = 0 ;
for ( int j = n ; j < n + m ; j ++ ) {
if ( on [j] == -1 ) C ;
if ( ret [j] != on [j] ) z = 1 ;
}
if ( z ) on [i] = 1 ;
}
for ( int i = n ; i < n + m ; i ++ ) {
if ( on [i] == -1 ) cout << '?' ;
else cout << on [i] ;
}
cout << endl ;
}
Compilation message
ili.cpp: In function 'int val(std::__cxx11::string)':
ili.cpp:38:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for ( int i = 1 ; i < x.size() ; i ++ ) {
~~^~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
512 KB |
Output is correct |
| 2 |
Correct |
5 ms |
512 KB |
Output is correct |
| 3 |
Incorrect |
5 ms |
512 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
512 KB |
Output is correct |
| 2 |
Correct |
5 ms |
512 KB |
Output is correct |
| 3 |
Incorrect |
5 ms |
512 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
512 KB |
Output is correct |
| 2 |
Correct |
5 ms |
512 KB |
Output is correct |
| 3 |
Incorrect |
5 ms |
512 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
