Submission #170780

#	Time	Username	Problem	Language	Result	Execution time	Memory
170780		beksultan04	은행 (IZhO14_bank)	C++14	52 / 100	318 ms	133780 KiB

bank

#include <bits/stdc++.h>
using namespace std;
#define fr first
#define sc second
#define pb push_back
#define mk make_pair
#define OK puts("OK");
#define sz(s) (int)s.size()
#define pii pair<int,int>
#define all(s) s.begin(), s.end()
#define allr(s) s.rbegin(), s.rend()
#define rep(i,n) for (i=0;i<(n);++i)
#define rep1(i,n) for (i=1;i<=(n);++i)
#define ret return
#define nemeshay ios::sync_with_stdio(0),cin.tie(0);
const int N=30,INF=1e9+7;
int a[N],b[N],n,m,flag=0;
vector <string> v;
void pre(string &s){
    int i=s.size()-1;
    while (i>=0 && s[i]!='0'){
        s[i]='0';
        i--;
    }
    s[i]='1';
    ret ;
}

string sum_bin(string a1,string b1){
    int i;
    for (i=0;i<m;++i){
        if (b1[i]=='1')a1[i]='1';
    }
    ret a1;
}

bool is(string a1,string b1){
    int i;
    for (i=0;i<m;++i)
        if (a1[i]=='1' && b1[i]=='1')
            ret 0;
    ret 1;
}
int sum(string a1){
    int i,c=0;
    for (i=0;i<m;++i)
        if (a1[i]=='1')
            c+=b[i];
    ret c;
}


void rec(string s,int j){
    int i;
    if (j==n){
        flag=1;
        ret ;
    }
    for (i=0;i<v.size();++i){
        if (is(s,v[i])){
            int x=sum(v[i]);
            if (x==a[j]){
                rec(sum_bin(s,v[i]),j+1);
            }
        }
    }
}

main(){
    nemeshay
    int i,j,k,ans=0,c=1;
    string s="",sss="";
    cin>>n>>m;
    rep(i,n)cin>>a[i];
    rep(i,m){
        cin>>b[i];
        c*=2;
        if (i!=0)
            s+='0';
    }
    s+='1';
    while (c>1){
        v.pb(s);
        pre(s);
        c--;
    }
    for (i=0;i<v.size();++i){
        int x=sum(v[i]);
        if (x==a[0]){
            rec(v[i],1);
        }
    }
    if (flag)cout <<"YES";
    else
        cout <<"NO";
}
/*1 20
100
100 1 1 1  1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1*/

Compilation message (stderr)

bank.cpp: In function 'void rec(std::__cxx11::string, int)':
bank.cpp:59:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i=0;i<v.size();++i){
              ~^~~~~~~~~
bank.cpp: At global scope:
bank.cpp:69:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
bank.cpp: In function 'int main()':
bank.cpp:87:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i=0;i<v.size();++i){
              ~^~~~~~~~~
bank.cpp:71:11: warning: unused variable 'j' [-Wunused-variable]
     int i,j,k,ans=0,c=1;
           ^
bank.cpp:71:13: warning: unused variable 'k' [-Wunused-variable]
     int i,j,k,ans=0,c=1;
             ^
bank.cpp:71:15: warning: unused variable 'ans' [-Wunused-variable]
     int i,j,k,ans=0,c=1;
               ^~~

• Subtask 1: 0 / 19
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 0 / 29