#include<bits/stdc++.h>
#define f first
#define s second
#define int long long
using namespace std;
const int N=2e5+5,mod=1e9+7;
int t,fix[2][N],n,m;
pair<int,int> ind1[N],ind2[N];
char a[2][N],s[N],c[N],ans[N];
void dfs(int u,int t){
a[t][u] = '0';
if(!t) return;
fix[t][u] = 1;
dfs(ind1[u].f,ind1[u].s);
dfs(ind2[u].f,ind2[u].s);
}
int get(string s){
int cur = 0;
for(int i=1;i<s.size();i++){
cur=cur*10+s[i]-'0';
}
return cur;
}
main(){
cin>>n>>m;
for(int j=1;j<=n;j++) {
a[0][j] = '?';
}
for(int i=1;i<=m;i++){
cin>>a[1][i];
}
for(int i=1;i<=m;i++){
string s1,s2;
cin>>s1>>s2;
if(s1[0]=='x') ind1[i]={get(s1),0};
else ind1[i]={get(s1),1};
if(s2[0]=='x') ind2[i]={get(s2),0};
else ind2[i]={get(s2),1};
}
for(int i=m;i>=1;i--){
if(a[1][i]=='0' && !fix[1][i]) dfs(i,1);
}
for(int i=1;i<=m;i++) {
if(a[ind1[i].s][ind1[i].f]=='1' || a[ind2[i].s][ind2[i].f]=='1') a[1][i] = '1';
}
for(int i=1;i<=m;i++) {
s[i] = a[1][i];
if(a[1][i]=='?') a[1][i] = '1';
}
for(int i=1;i<=n;i++) {
c[i] = a[0][i];
if(a[0][i]=='?') a[0][i] = '1';
}
for(int i=1;i<=m;i++){
if(s[i]=='?') {
dfs(i,1);
ans[i] = '?';
int F = 0;
for(int j=1;j<=m;j++) {
if(a[ind1[j].s][ind1[j].f]=='1' || a[ind2[j].s][ind2[j].f]=='1') a[1][j] = '1';
else a[1][j] = '0';
if(a[1][j] == '0' && s[j] == '1') F=1;
}
if(F) ans[i] = '1';
}
else ans[i] = s[i];
for(int j=1;j<=m;j++){
a[1][j] = s[j];
if(a[1][j] == '?') a[1][j] = '1';
}
for(int j=1;j<=m;j++){
a[0][j] = c[j];
if(a[0][j]=='?') a[0][j] = '1';
}
}
for(int i=1;i<=m;i++) cout<<ans[i];
}
Compilation message
ili.cpp: In function 'long long int get(std::string)':
ili.cpp:19:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
19 | for(int i=1;i<s.size();i++){
| ~^~~~~~~~~
ili.cpp: At global scope:
ili.cpp:24:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
24 | main(){
| ^~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
