Submission #1377798

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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(){
  int n,a;
  stack <int> st;

  scanf("%d", &n);
  REP (i, n) {
    scanf("%d",&a);
    st.push(a);
  }

  int sum = 0;
  while (!st.empty()) {
    if (st.top() % 3 == 2 || st.top() % 2 == 0) {
      a = st.top() - 1;
      st.pop();
      st.push(a);
      sum++;
    } else st.pop();
  }

  printf("%d\n",sum);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:22:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
                  ^
./Main.cpp:24:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&a);
                   ^

Judge Result