Submission #537447

#	Time	Username	Problem	Language	Result	Execution time	Memory
537447		jamezzz	Kpart (eJOI21_kpart)	C++17	30 / 100	2114 ms	460260 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define sf scanf
#define pf printf

int t,n,a[1005],p[1005],memo[1005][100005],old[1005][100005],die[1005];

int dp(int i,int v){
	if(a[i]==v)return i;
	if(v<0||i==0)return 0;
	if(old[i][v]==t)return memo[i][v];
	old[i][v]=t;
	return memo[i][v]=max(dp(i-1,v),dp(i-1,v-a[i]));
}

int main(){
	sf("%d",&t);
	memset(old,-1,sizeof old);
	while(t--){
		sf("%d",&n);
		for(int i=1;i<=n;++i)sf("%d",&a[i]),p[i]=a[i]+p[i-1];
		memset(die,0,sizeof die);
		for(int i=1;i<=n;++i){
			for(int j=i;j<=n;++j){
				if(die[j-i+1])continue;
				if((p[j]-p[i-1])%2==1)die[j-i+1]=true;
				if(dp(j,(p[j]-p[i-1])/2)<i)die[j-i+1]=true;
			}
		}
		int cnt=0;
		for(int i=1;i<=n;++i)if(!die[i])++cnt;
		pf("%d ",cnt);
		for(int i=1;i<=n;++i)if(!die[i])pf("%d ",i);
		pf("\n");
	}
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:18:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |  sf("%d",&t);
      |    ^
Main.cpp:21:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |   sf("%d",&n);
      |     ^
Main.cpp:22:26: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |   for(int i=1;i<=n;++i)sf("%d",&a[i]),p[i]=a[i]+p[i-1];
      |                          ^

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 70