Submission #751619

#	Time	Username	Problem	Language	Result	Execution time	Memory
751619		Username4132	Ili (COI17_ili)	C++14	49 / 100	4070 ms	12756 KiB

ili

#include<iostream>
#include<bitset>
using namespace std;
#define forn(i, n) for(int i=0; i<(int)n; ++i)

const int MAXN=10010;
int n, m;
string info, ans;
bitset<MAXN> arr[MAXN], one("1"), nuli;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> m >> info;
    ans.assign(m, '?');
    forn(i, m){
        char c1, c2;
        int a1, a2;
        cin >> c1 >> a1 >> c2 >> a2;
        --a1, --a2;
        bitset<MAXN> bi1 = c1=='x'? (one<<a1) : arr[a1];
        bitset<MAXN> bi2 = c2=='x'? (one<<a2) : arr[a2];
        arr[i]=bi1|bi2;
    }
    forn(i, m) if(info[i]=='0') nuli|=arr[i];
    nuli=~nuli;
    forn(i, m){
        arr[i]&=nuli;
        if(arr[i].count()==0) ans[i]='0';
    }
    forn(i, m) if(ans[i]!='0'){
        bool put=false;
        forn(j, m) if(info[j]=='1') put|=(arr[j] & arr[i])==arr[j];
        if(put) ans[i]='1';
    }
    cout << ans << endl;    
}

• Subtask 1: 7 / 7
• Subtask 2: 42 / 42
• Subtask 3: 0 / 51