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Submission #848736

# Submission time Handle Problem Language Result Execution time Memory
848736 2023-09-13T12:10:19 Z socpite Snake Escaping (JOI18_snake_escaping) C++14
0 / 100
 2000 ms 4440 KB 
#include<bits/stdc++.h>
using namespace std;

const int maxn = (1<<20);

int n, q;

int sub[maxn], super[maxn], val[maxn];

int gt(char x){
    if(x == '0' || x == '1')return x-'0';
    else return 2;
}

int main(){
    ios::sync_with_stdio(false);
    cin >> n >> q;
    for(int i = 0; i < (1<<n); i++){
        char x;
        cin >> x;
        sub[i] = super[i] = val[i] = x-'0';
    }
    for(int i = 0; i < n; i++){
        for(int j = 0; j < (1<<n); j++){
            if(i&(1<<j)){
                super[i^(1<<j)]+=super[i];
                sub[i]+=sub[i^(1<<j)];
            }
        }
    }
    while(q--){
        string str;
        cin >> str;
        reverse(str.begin(), str.end());
        int mask[3] = {0, 0, 0};
        long long ans = 0;
        for(int i = 0; i < n; i++){
            mask[gt(str[i])]|=(1<<i);
        }
        if(__builtin_popcount(mask[2]) <= 6){
            for(int i = mask[2];;i=(i-1)&mask[2]){
                ans += val[i^mask[1]];
                if(!i)break;
            }
        }
        else if(__builtin_popcount(mask[1]) <= 6){
            for(int i = mask[1];;i=(i-1)&mask[1]){
                if(__builtin_popcount(i)&1)ans -= sub[mask[1]^i];
                else ans += sub[mask[1]^i];
            }
        }
        else {
            for(int i = mask[0];;i=(i-1)&mask[0]){
                if(__builtin_popcount(i)&1)ans -= super[mask[1]^i];
                else ans += super[mask[1]^i];
            }
        }
        cout << ans << "\n";
    }
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4440 KB Output is correct
2 Execution timed out 2050 ms 4440 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4440 KB Output is correct
2 Execution timed out 2050 ms 4440 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4440 KB Output is correct
2 Execution timed out 2050 ms 4440 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4440 KB Output is correct
2 Execution timed out 2050 ms 4440 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4440 KB Output is correct
2 Execution timed out 2050 ms 4440 KB Time limit exceeded
3 Halted 0 ms 0 KB -