oj.uz

Submission #238247

# Submission time Handle Problem Language Result Execution time Memory
238247 2020-06-10T11:34:50 Z Dremix10 Lamps (JOI19_lamps) C++17
6 / 100
 1000 ms 3540 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
#define F first
#define S second
#define endl '\n'
#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define maxp 22
#define EPS (ld)(1e-18)
#define mod (int)(1e9+7)
#define N (int)(1e5+1)

int fuse(string s){
    int i;
    int num=0;
    for(i=0;i<s.size();i++)
        if(s[i]=='1')
        num+=(1<<i);
    return num;
}

int main (){
fastio;

int n;
cin>>n;

string a,b;
cin>>a>>b;

int i,j,k;
queue <pair<int,int> > q;
q.push({fuse(a),0});
int want=fuse(b);

map<int,bool> v;

while(!q.empty()){
    int start=q.front().F;
    int cost=q.front().S;
    q.pop();

    if(v[start])
        continue;

    v[start]=1;

    if(start==want){
        cout<<cost<<endl;
        return 0;
    }
    cost++;

    int pos=0;
    while((start&(1<<pos))==(want&(1<<pos)))
        pos++;


    for(j=pos;j<n;j++){
        int num=0;
        for(k=0;k<n;k++)
            if(pos<=k && k<=j)
                num+=(1<<k);
            else if(start&(1<<k))
                num+=(1<<k);
        q.push({num,cost});
    }

    for(j=pos;j<n;j++){
        int num=0;
        for(k=0;k<n;k++)
            if(pos<=k && k<=j)
                num+=0;
            else if(start&(1<<k))
                num+=(1<<k);
        q.push({num,cost});
    }

    for(j=pos;j<n;j++){
        int num=0;
        for(k=0;k<n;k++)
            if(pos<=k && k<=j){
                if(!(start&(1<<k)))
                    num+=(1<<k);
            }
            else if(start&(1<<k))
                num+=(1<<k);
        q.push({num,cost});
    }


}



}

Compilation message

lamp.cpp: In function 'int fuse(std::__cxx11::string)':
lamp.cpp:18:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0;i<s.size();i++)
             ~^~~~~~~~~
lamp.cpp: In function 'int main()':
lamp.cpp:33:5: warning: unused variable 'i' [-Wunused-variable]
 int i,j,k;
     ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 32 ms 1152 KB Output is correct
9 Correct 32 ms 1152 KB Output is correct
10 Correct 13 ms 640 KB Output is correct
11 Correct 13 ms 640 KB Output is correct
12 Correct 7 ms 640 KB Output is correct
13 Correct 16 ms 1280 KB Output is correct
14 Correct 6 ms 512 KB Output is correct
15 Correct 8 ms 640 KB Output is correct
16 Correct 14 ms 1152 KB Output is correct
17 Correct 10 ms 896 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 12 ms 896 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 6 ms 512 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 12 ms 896 KB Output is correct
27 Correct 10 ms 768 KB Output is correct
28 Correct 6 ms 512 KB Output is correct
29 Correct 16 ms 1152 KB Output is correct
30 Correct 15 ms 1280 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 8 ms 768 KB Output is correct
33 Correct 10 ms 896 KB Output is correct
34 Correct 6 ms 384 KB Output is correct

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 32 ms 1152 KB Output is correct
9 Correct 32 ms 1152 KB Output is correct
10 Correct 13 ms 640 KB Output is correct
11 Correct 13 ms 640 KB Output is correct
12 Correct 7 ms 640 KB Output is correct
13 Correct 16 ms 1280 KB Output is correct
14 Correct 6 ms 512 KB Output is correct
15 Correct 8 ms 640 KB Output is correct
16 Correct 14 ms 1152 KB Output is correct
17 Correct 10 ms 896 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 12 ms 896 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 6 ms 512 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 12 ms 896 KB Output is correct
27 Correct 10 ms 768 KB Output is correct
28 Correct 6 ms 512 KB Output is correct
29 Correct 16 ms 1152 KB Output is correct
30 Correct 15 ms 1280 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 8 ms 768 KB Output is correct
33 Correct 10 ms 896 KB Output is correct
34 Correct 6 ms 384 KB Output is correct
35 Execution timed out 1098 ms 2936 KB Time limit exceeded
36 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 12 ms 3540 KB Output is correct
8 Execution timed out 1093 ms 3540 KB Time limit exceeded
9 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 32 ms 1152 KB Output is correct
9 Correct 32 ms 1152 KB Output is correct
10 Correct 13 ms 640 KB Output is correct
11 Correct 13 ms 640 KB Output is correct
12 Correct 7 ms 640 KB Output is correct
13 Correct 16 ms 1280 KB Output is correct
14 Correct 6 ms 512 KB Output is correct
15 Correct 8 ms 640 KB Output is correct
16 Correct 14 ms 1152 KB Output is correct
17 Correct 10 ms 896 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 12 ms 896 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 6 ms 512 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 12 ms 896 KB Output is correct
27 Correct 10 ms 768 KB Output is correct
28 Correct 6 ms 512 KB Output is correct
29 Correct 16 ms 1152 KB Output is correct
30 Correct 15 ms 1280 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 8 ms 768 KB Output is correct
33 Correct 10 ms 896 KB Output is correct
34 Correct 6 ms 384 KB Output is correct
35 Execution timed out 1098 ms 2936 KB Time limit exceeded
36 Halted 0 ms 0 KB -