Submission #68539

#	Time	Username	Problem	Language	Result	Execution time	Memory
68539		tempytemptemp	Bank (IZhO14_bank)	C++14	44 / 100	212 ms	4960 KiB

bank

/*
  We found Despacito 5 during contest (not clickbait)
*/
#include	<iostream>
#include	<cstdio>
#include	<vector>
#include 	<set>
#include	<map>
#include	<queue>
#include	<stack>
#include	<algorithm>
#include	<cstring>
#include	<cfloat>
#include	<cmath>
#include	<cassert>
#include	<locale>
#include	<string>
#include	<bitset>
#include	<functional>
#include	<climits>
#include	<iomanip>
using namespace std;

#define read(x)     freopen(x,"r",stdin)
#define write(x)    freopen(x,"w",stdout)
#define cl(a,b)	    memset(a,b,sizeof(a))
#define all(x)      x.begin(),x.end()
#define rall(x)     x.rbegin(),x.rend()
#define ll          long long
#define ld          long double
#define vec         vector
#define vi          vec<int>
#define heap        priority_queue
#define res         reserve
#define pb          push_back
#define f(x,y,z)    for(int x=(y); x<(z); x++)
#define fd(x,y,z)   for(int x=(y); x>=(z); x--)
#define fit(x,y)    for(auto x: y)
#define srt(x)      sort(all(x))
#define rsrt(x)     sort(rall(x))
#define make_unique(x) sort(all((x))); (x).resize(unique(all((x))) - (x).begin())
#define pii         pair<int,int>
#define ppi         pair<pii,int>
#define pip         pair<int,pii>
#define mp          make_pair
#define f1          first
#define s2          second
#define cdbg(x)     cerr<<#x<<" = "<<x<<",\t";
#define cdbl        cerr<<"\n----------\n";
#define pow2(x)     ((x)*(x))
#define edist(x1, y1, x2, y2) (sqrt((pow2(x1-x2)+pow2(y1-y2))))
#define mdist(x1, y1, x2, y2) (abs((x1)-(x2))+abs((y1)-(y2)))
#define y1          FullSensei
#define mid         ((ss+se)>>1)
#define left        (si<<1)
#define right       ((si<<1)+1)
#define pi          3.141592653589793
#define popcount    __builtin_popcount
#define spc			' '
#define endl		'\n'
#define in			insert
#define up_b		upper_bound
#define low_b 		lower_bound
#define Decimal		fixed<<setprecision(20)

bool checkbit(int x,int y){return (x&(1<<y));}
int setbit(int x,int y){return (x^(1<<y));}
const int dirs[4][2]={{1,0},{0,1},{-1,0},{0,-1}};
const int mod=1e9+7;
const int p1=805306457;
const int p2=1610612741;
const int INF=1e9;
const int N=10;
const int M=10;
const int MVAL=1e3;
int a[N+3], b[20+3];
int n, m;
bool dp[N+3][MVAL+3][1<<M];

int main(){
	scanf("%d %d",&n,&m);
	assert((n==1) || (n<=N && m<=M));
	
	f(i,1,n+1)	scanf("%d",&a[i]);
	f(i,0,m)	scanf("%d",&b[i]);
	if(n==1){
		f(k,0,1<<m){
			int sum=0;
			f(l,0,m){
				if(checkbit(k,l)){
					sum+=b[l];
				}
			}
			if(sum == a[1]){
				cout<<"YES"<<endl;
				return 0;
			}
		}
		cout<<"NO"<<endl;
		return 0;
	}
	else{
		f(k,0,1<<m)
			dp[n+1][0][k]=dp[n][0][k]=true;
		fd(i,n,1){
			f(j,0,a[i]+1){
				f(k,0,1<<m){
					if(j==0){
						dp[i][j][k]|=dp[i+1][a[i+1]][k];
//						cerr<<i<<spc<<j<<spc<<k<<spc<<dp[i][j][k]<<endl;
						continue;
					}
					if(k==0)
						continue;
					f(l,0,m){
						if(checkbit(k,l) && j>=b[l]){
							dp[i][j][k]|=dp[i][j-b[l]][setbit(k,l)];
						}
					}
				}
			}
		}
		if(dp[1][a[1]][(1<<m)-1]==1){
			cout<<"YES"<<endl;
		}
		else{
			cout<<"NO"<<endl;
		}
//		f(i,0,a[n]+1){
//			cerr<<dp[n][i][(1<<m)-1]<<endl;
//		}
		return 0;
	}
	return 0;
}
//2 5
//3 2
//2 1 1 1 10

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:81:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
bank.cpp:84:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  f(i,1,n+1) scanf("%d",&a[i]);
             ~~~~~^~~~~~~~~~~~
bank.cpp:85:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  f(i,0,m) scanf("%d",&b[i]);
           ~~~~~^~~~~~~~~~~~

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