Submission #1220987

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Source Code Expand

#include <cstdio>
#include <cstring>
#include <cassert>
#include <algorithm>
#include <iostream>
#include <vector>

using namespace std;

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

typedef long long ll;
typedef pair<int, int> P;
#define X first
#define Y second

const int MAX = 1<<17;

int n, p[MAX];

int main()
{
  scanf("%d", &n);
  REP(i, n) scanf("%d", &p[i]);

  int rje = 0;
  for (int i=0; i<n; ) {
    int j = i+1, st = -1;
    for (; j<n; j++) {
      if (p[j] != p[j-1]) {
	int nst = p[j] > p[j-1];
	if (st == -1) st = nst;
	else if (st != nst) {
	  break;
	}
      }
    }
    i = j;
    rje++;
  }

  printf("%d\n", rje);

  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:26:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
                  ^
./Main.cpp:27:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   REP(i, n) scanf("%d", &p[i]);
                               ^

Judge Result