Submission #904978

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
int n,m,i,j,a,b[200200],l[200200],r[200200];
long long res;
int main() {
  scanf("%d",&n);
  for (i=1; i<=n; i++) {
    scanf("%d",&a);
    b[a]=i;
  }
  for (i=n; i>0; i--) {
    j=b[i];
    l[j]=r[j]=j;
    if (j>1 && r[j-1]!=0) l[j]=l[j-1];
    if (j<n && l[j+1]!=0) r[j]=r[j+1];
    l[r[j]]=l[j];
    r[l[j]]=r[j];
    res+=(j-l[j]+1LL)*(r[j]-j+1LL)*i;
  }
  printf("%lld\n",res);
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:6:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
                 ^
./Main.cpp:8:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&a);
                   ^

Judge Result