oj.uz

Submission #222444

# Submission time Handle Problem Language Result Execution time Memory
222444 2020-04-13T07:23:37 Z dantoh000 Popcount (COCI19_popcount) C++14
0 / 110
 5 ms 384 KB 
#include <bits/stdc++.h>
using namespace std;
string tostring(int x){
    string s;
    if (x == 0) return "0";
    while (x){
        s += (x%10)+'0';
        x /= 10;
    }
    reverse(s.begin(),s.end());
    return s;
}
int main(){
    int n,k;
    scanf("%d%d",&n,&k);
    vector<string> ans;
    //srand(time(NULL));
    //int T = rand()%(1<<n);
    //int ch = __builtin_popcount(T);
    int num = n/4;
    for (int i = 1; i <= num; i++){
        //printf("T = %d\n",T);
        //printf("add %d shift %d\n",(T&1)+((T&2)>>1)+((T&4)>>2)+((T&8)>>3),(n-i*4-1));
        if (n-i*4-1 == 0){
            ans.push_back("A=((A>>4)+((A&1)+(((A&2)>>1)+(((A&4)>>2)+((A&8)>>3)))))");
        }
        else ans.push_back("A=((A>>4)+(((A&1)+(((A&2)>>1)+(((A&4)>>2)+((A&8)>>3))))<<"+tostring(n-i*4-1)+"))");
        //T =(T>>4)+(((T&1)+((T&2)>>1)+((T&4)>>2)+((T&8)>>3))<<(n-i*4-1));
    }
    n %= 4;
    //printf("there are %d bits left\n",n);
    if (n == 2){
         ans.push_back("A=((A>>1)+(A&1))");
         //T=(T>>1)+(T&1);
    }
    else if (n == 3){
         ans.push_back("A=((A>>2)+((A&1)+((A&2)>>1)))");
         //T=(T>>2)+(T&1)+((T&2)>>1);
    }
    /*else if (n%4 == 2){
         ans.push_back("A=(A>>3)+(A&1)+((A&2)>>1)+((A&4)>>2)");
         T=(T>>3)+(T&1)+(T&2)+(T&4);
    }
    else if (n%4 == 3){
         ans.push_back("A=(A>>4)+(A&1)+((A&2)>>1)+((A&4)>>2)+((A&8)>>3)");
         T=(T>>4)+(T&1)+(T&2)+(T&4)+(T&8);
    }*/
    printf("%d\n",ans.size());
    for (auto x : ans){
        cout << x << "\n";
    }
    //printf("%d %d\n",T,ch);
    //assert(T==ch);


}

Compilation message

popcount.cpp: In function 'int main()':
popcount.cpp:48:29: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<std::__cxx11::basic_string<char> >::size_type {aka long unsigned int}' [-Wformat=]
     printf("%d\n",ans.size());
                   ~~~~~~~~~~^
popcount.cpp:15:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&k);
     ~~~~~^~~~~~~~~~~~~~

Subtask #1
0.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Accepted.
2 Correct 4 ms 256 KB Accepted.
3 Incorrect 4 ms 256 KB Wrong command format.
4 Halted 0 ms 0 KB -

Subtask #2
0.0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB Wrong command format.

Subtask #3
0.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Accepted.
2 Correct 5 ms 256 KB Accepted.
3 Correct 4 ms 256 KB Accepted.
4 Correct 5 ms 256 KB Accepted.
5 Incorrect 5 ms 384 KB Wrong command format.
6 Halted 0 ms 0 KB -

Subtask #4
0.0 / 45.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 384 KB Incorrect number of commands.
2 Halted 0 ms 0 KB -