Submission #36156

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
36156	2017-12-06 05:03:26	Dat160601	Bootfall (IZhO17_bootfall)	C++14	100 / 100	526 ms	5800 KiB

bootfall

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#include <bits/stdc++.h>
using namespace std;
#define pb push_back
vector <int> ans;
int n,a[507],sum[507],dp[250007],save[250007],res[250007];
int main(){
  scanf("%d",&n);
  for(int i=1;i<=n;i++){
    scanf("%d",&a[i]);
    sum[i]=sum[i-1]+a[i];
  }
  if(sum[n]%2==1){
    printf("0");
    return 0;
  }
  save[0]=1;
  save[a[1]]=1;
  for(int i=2;i<=n;i++){
    for(int j=0;j<=sum[i];j++){
      if(j<a[i]) dp[j]=save[j];
      else dp[j]=save[j]+save[j-a[i]];
    }
    for(int j=0;j<=sum[i];j++) save[j]=dp[j];
  }
  if(dp[sum[n]/2]==0){
    printf("0");
    return 0;
  }
  for(int i=1;i<=n;i++){
    for(int j=0;j<=sum[n];j++) save[j]=dp[j];
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

bootfall.cpp: In function 'int main()':
bootfall.cpp:7:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
bootfall.cpp:9:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
                    ^

• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 15 / 15
• Subtask 4: 16 / 16
• Subtask 5: 21 / 21
• Subtask 6: 35 / 35