Created
August 31, 2015 17:22
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yukicoder No.4
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#include <iostream> | |
#include <iomanip> | |
#include <vector> | |
#include <algorithm> | |
#include <numeric> | |
#include <functional> | |
#include <cmath> | |
#include <queue> | |
#include <stack> | |
#define repd(i,a,b) for (int i=(a);i<(b);i++) | |
#define rep(i,n) repd(i,0,n) | |
#define MAX 10100 | |
typedef long long ll; | |
using namespace std; | |
int inputValue(){ | |
int a; | |
cin >> a; | |
return a; | |
}; | |
void inputArray(int * p, int a){ | |
rep(i, a){ | |
cin >> p[i]; | |
} | |
}; | |
void inputVector(vector<int> * p, int a){ | |
rep(i, a){ | |
int input; | |
cin >> input; | |
p -> push_back(input); | |
} | |
} | |
template <typename T> | |
void output(T a, int precision) { | |
if(precision > 0){ | |
cout << setprecision(precision) << a << "\n"; | |
} | |
else{ | |
cout << a << "\n"; | |
} | |
} | |
int main(int argc, const char * argv[]) { | |
// source code | |
int N = inputValue(); | |
int W[100]; | |
int sum = 0; | |
rep(i, N){ | |
W[i] = inputValue(); | |
sum += W[i]; | |
} | |
bool P[MAX] = {false}; | |
P[sum / 2] = true; | |
rep(i, N){ | |
rep(j, MAX){ | |
if (j - W[i] >= 0 && P[j] == true) { | |
P[j - W[i]] = true; | |
} | |
} | |
} | |
if (P[0] == true && sum % 2 == 0) { | |
output("possible", 0); | |
} | |
else{ | |
output("impossible", 0); | |
} | |
return 0; | |
} |
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