Codeforces C. Vasya and Golden Ticket（思维题）

 

Codeforces Round #512 (Div. 2, based on Technocup 2019 Elimination Round 1)

 

在这个题中给了n的范围最大为100个  并且最大的值也就9*100  那么我们完全可以暴力去求解。 暴力每一个可能取的数值

 

#include<set>
#include<map>
#include<queue>
#include<stack>
#include<bitset>
#include<math.h>
#include<string>
#include<vector>
#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
#define PI acos(-1)
#define close ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define open  #ifndef ONLINE_JUDGEfreopen("in.txt","r",stdin);freopen("out.txt","w",stdout); #endif
using namespace std;
typedef long long ll;
const double pai=3.141592653589793238462643383279;
const int MAX_N = 1000000+50;
const int INF = 0x3f3f3f3f;
const double EPS = 1e-10;
const ll INF_ll = 0x7fffffffffffffff;
ll mod = 1e9+7;

/*
不要放弃

	Don't give up
*/

inline int read()
{
	int x=0,f=1;
	char ch=getchar();
	while(ch<'0'||ch>'9') {
		if(ch=='-') f=-1;
		ch=getchar();
	}
	while(ch>='0'&&ch<='9') {
		x=10*x+ch-'0';
		ch=getchar();
	}
	return x*f;
}
inline void Out(int a)
{
	if(a>9)
		Out(a/10);
	putchar(a%10+'0');
}

int n;
string s;

bool check(int x){
	int sum = 0,cnt = 0;
	for(int i = 0;  i < n; i++){
		sum += (s[i] - '0');
		if(sum == x){
			sum = 0;
			cnt++;
		}else if(sum > x){
			return false;
		}
	}
	if(sum != 0) return false;
	if(cnt >= 2) return true;
	else return false;
}

int main()
{
	cin>>n>>s;
	int num = n*9;
	for(int i = 0 ; i <= num; i++){
		if(check(i)){
			cout<<"YES"<<endl;
			return 0;
		}
	}
	cout<<"NO"<<endl;
	return 0;
}

/*
                ********
               ************
               ####....#.
             #..###.....##....
             ###.......######              ###            ###
                ...........               #...#          #...#
               ##*#######                 #.#.#          #.#.#
            ####*******######             #.#.#          #.#.#
           ...#***.****.*###....          #...#          #...#
           ....**********##.....           ###            ###
           ....****    *****....
             ####        ####
           ######        ######
##############################################################
#...#......#.##...#......#.##...#......#.##------------------#
###########################################------------------#
#..#....#....##..#....#....##..#....#....#####################
##########################################    #----------#
#.....#......##.....#......##.....#......#    #----------#
##########################################    #----------#
#.#..#....#..##.#..#....#..##.#..#....#..#    #----------#
##########################################    ############
*/