제출 #222428

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
222428		dantoh000	Popcount (COCI19_popcount)	C++14	0 / 110	5 ms	384 KiB

popcount

#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;
    int num = (n-1)/4;
    for (int i = 1; i <= num; i++){
        ans.push_back("A=(A>>4)+(((A&1)+(A&2)+(A&4)+(A&8))<<"+tostring(n-i*4-1)+")");
    }
    if (n % 4 == 1){
         ans.push_back("A=(A>>1)+(A&1)");
    }
    else if (n%4 == 2){
         ans.push_back("A=(A>>2)+(A&1)+(A&2)");
    }
    else if (n%4 == 3){
         ans.push_back("A=(A>>3)+(A&1)+(A&2)+(A&4)");
    }
    else if (n%4 == 0){
         ans.push_back("A=(A>>4)+(A&1)+(A&2)+(A&3)+(A&8)");
    }
    printf("%d\n",ans.size());
    for (auto x : ans){
        cout << x << "\n";
    }

}

컴파일 시 표준 에러 (stderr) 메시지

popcount.cpp: In function 'int main()':
popcount.cpp:33:29: 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 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 35
• Subtask 4: 0 / 45