Submission #1986275

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Source Code Expand

#include <iostream>
#include <cstdio>
using namespace std;

int main() {
  int N;
  scanf("%d",&N);
  int a[N];
  int p=0;
  for (int i=0; i<N; i++) {
    scanf("%d",&a[i]);
    if (abs(a[p])<abs(a[i])) {
      p=i;
    }
  }
  printf("%d\n",2*N-1);
  for (int i=0; i<N; i++) {
    printf("%d %d\n",p+1,i+1);
  }
  if (a[p]<0) {
    for (int i=N; i>1; i--) {
      printf("%d %d\n",i,i-1);
    }
  } else {
    for (int j=1; j<N; j++) {
      printf("%d %d\n",j,j+1);
    }
  }
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:7:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&N);
                 ^
./Main.cpp:11:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&a[i]);
                      ^

Judge Result