Submission #997805

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Source Code Expand

#include <cstdio>
#include <algorithm>
#include <cmath>
#include <queue>
#include <vector>
#include <map>
#include <set>

using namespace std;

typedef pair<int , int> P2;
typedef pair<pair<int , int> , int> P3;
typedef pair<pair<int , int> , pair<int , int> > P4;
#define Fst first
#define Snd second
#define PB(a) push_back(a)
#define MP(a , b) make_pair((a) , (b))
#define M3P(a , b , c) make_pair(make_pair((a) , (b)) , (c))
#define M4P(a , b , c , d) make_pair(make_pair((a) , (b)) , make_pair((c) , (d)))
#define repp(i,a,b) for(int i = (int)(a) ; i < (int)(b) ; ++i)
#define repm(i,a,b) for(int i = (int)(a) ; i > (int)(b) ; --i)
#define repv(t,it,v) for(vector<t>::iterator it = v.begin() ; it != v.end() ; ++it)

int x,p;

double solve(int n){
	return 100.0 * n / p;
}

int main(){
	scanf("%d%d" , &x , &p);
	if(p == 100){
		printf("%d\n" , (x+1) / 2);
	} else if(x%2==0){
		printf("%.9f\n" , solve(x/2));
	} else {
		printf("%.9f\n" , 1.0 + solve(x/2)*0.01*p + solve(x/2+1)*0.01*(100-p));
	}
	return 0;
}

Submission Info

Compile Error

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

Judge Result