Submission #1247152

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

//--------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define RFOR(i,a,b) for(int i=(b)-1;i>=(a);i--)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) RFOR(i,0,n)
#define LL long long
#define INF INT_MAX/3

//--------------------------------------------
const double EPS = 1e-14;
const double PI  = acos(-1.0);

//--------------------------------------------

int main(){
  double sum = 0;
  int n;
  scanf("%d",&n);
  REP(i,n) {
    sum += 10000 * ((double)1 / (double)n) * (i + 1);
  }
  printf("%G\n",sum);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:21:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
                 ^

Judge Result