Submission #905386

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;

int N;
int A[1000];

bool solve()
{
    int x=A[0]/2;
    int y=A[0]-x;
    int a=x;
    int b=y;
    int c=1;
    for(int i=0; i<N; i++)
    {
        if(a>0 && a+y==A[i])
            a--;
        else if(b>0 && b+x==A[i])
            b--;
        else if(c>0 && A[i]==min(x, y))
            c--;
        else if(A[i]<min(x, y)+1)
            return false;
    }
    return a==0 && b==0 && c==0;
}

int main()
{
    scanf("%d", &N);
    for(int i=0; i<N; i++)
        scanf("%d", A+i);
    sort(A, A+N, greater<int>());
    if(solve())
        printf("Possible\n");
    else
        printf("Impossible\n");
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:31:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
                    ^
./Main.cpp:33:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", A+i);
                         ^

Judge Result