Submission #1445462

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Source Code Expand

#include <ctime>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cassert>
#include <algorithm>
#include <iostream>
#include <vector>
#include <queue>
#include <stack>
#include <deque>
#include <set>
#include <map>
using namespace std;

typedef long long ll;
typedef double lf;
typedef long double Lf;
typedef pair <int,int> pii;
typedef pair <ll, ll> pll;

#define TRACE(x) cerr << #x << "  " << x << endl
#define FOR(i, a, b) for (int i = (a); i < int(b); i++)
#define REP(i, n) FOR(i, 0, n)
#define all(x) (x).begin(), (x).end()
#define _ << " " <<

#define fi first
#define sec second
#define mp make_pair

const int MAXN = 100100;

int n, p[MAXN];

map <int, int> imam;

int k;

int main() {
	scanf("%d %d",&n,&k);
	REP(i, n) {
		scanf("%d",&p[i]);
		imam[p[i]] = 1;
	}

	imam[0] = 1;
	sort(p, p + n);
	bool ok = 0;
	REP(i, n) if (imam[k - p[i]]) ok = 1;
	if (p[n - 1] >= k && ok) puts("POSSIBLE");
	else puts("IMPOSSIBLE");
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:41:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&k);
                      ^
./Main.cpp:43:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&p[i]);
                    ^

Judge Result