小米oj 海盗分赃

Posted 2021-11-27 dogenya

背包

#define mm(a) memset(a,0,sizeof(a));
#define max(x,y) (x)>(y)?(x):(y)
#define min(x,y) (x)<(y)?(x):(y)
#define Fopen freopen("1.in","r",stdin); freopen("m.out","w",stdout);
#define rep(i,a,b) for(int i=(a);i<=(b);i++)
#define per(i,b,a) for(int i=(b);i>=(a);i--)
#include<bits/stdc++.h>
typedef long long ll;
#define PII pair<ll,ll>
using namespace std;
const int INF=0x3f3f3f3f;
const int MAXN=(int)2e5 + 5;
const ll mod=1e9+7;


string input,temp;
vector<int>v;
int n,dp[MAXN];
int main() {
    while (cin >> input) {
//    cin>>input;
        istringstream iss(input);
        v.clear();
        v.push_back(0);
        mm(dp);
        int all=0;
        while (getline(iss, temp, ‘,‘)) {
            int x=atoi(temp.c_str());
            v.push_back(x);
            all+=x;
        }
        if(all&1) {
            printf("false\n");
            return 0;
        }
        n=v.size()-1;
        dp[0]=1;
        for(int i=1; i<=n; i++) {
            for(int j=all/2; j>=v[i]; j--) {
                dp[j]=max(dp[j],dp[j-v[i]]);
            }
        }
        if(dp[all/2])printf("true\n");
        else printf("false\n");
    }
    return 0;
}