Submission #74717

# Submission time Handle Problem Language Result Execution time Memory
74717 2018-09-06T21:35:50 Z OmarHashim Split the sequence (APIO14_sequence) C++14
71 / 100
2000 ms 83196 KB
#include<bits/stdc++.h>
using namespace std;

#define scl(x) scanf("%lld",&x)
#define sc(x)  scanf("%d",&x)
#define ll long long
#define lop(i,n) for(int i=0;i<n;++i)
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;

const int N=1e5+10,K=202;
ll dp[N][2],p[N];
int cut[N][K];
int n,k;
void solve(int s,int e,int l,int r,int rem){
	if(e<s)return;
	int m=s+((e-s)>>1);
	int opt=m;
	dp[m][rem&1]=-1e18;
	for(int i=max(l,m);i<=r;i++){
		ll res=(p[i]-p[m-1])*p[m-1]+dp[i+1][(rem-1)&1];
		if(res>dp[m][rem&1]){
			dp[m][rem&1]=res;
			opt=i;
		}
	}
	cut[m][rem]=opt;
	solve(s,m-1,l,opt,rem);
	solve(m+1,e,opt,r,rem);
}
int main(){
	sc(n),sc(k);k++;
	for(int i=1;i<=n;i++)
		scl(p[i]),p[i]+=p[i-1];
	for(int i=0;i<=n;i++)
		dp[i][0]=-1e18;

	dp[n+1][0]=0;
	for(int rem=1;rem<=k;rem++)
		solve(1,n,1,n,rem);

	printf("%lld\n",dp[1][k&1]);
	int cur=1,rem=k;
	while(cur<=n&&cut[cur][rem]!=n){
		printf("%d",cut[cur][rem]);
		cur=cut[cur][rem]+1;
		rem--;
		if(cur<=n)printf(" ");
	}
	puts("");

}

Compilation message

sequence.cpp: In function 'int main()':
sequence.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  sc(n),sc(k);k++;
       ^
sequence.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
sequence.cpp:34:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scl(p[i]),p[i]+=p[i-1];
            ^
# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB contestant found the optimal answer: 108 == 108
2 Correct 2 ms 380 KB contestant found the optimal answer: 999 == 999
3 Correct 2 ms 444 KB contestant found the optimal answer: 0 == 0
4 Correct 2 ms 564 KB contestant found the optimal answer: 1542524 == 1542524
5 Correct 2 ms 564 KB contestant found the optimal answer: 4500000000 == 4500000000
6 Correct 2 ms 564 KB contestant found the optimal answer: 1 == 1
7 Correct 2 ms 584 KB contestant found the optimal answer: 1 == 1
8 Correct 2 ms 696 KB contestant found the optimal answer: 1 == 1
9 Correct 2 ms 696 KB contestant found the optimal answer: 100400096 == 100400096
10 Correct 2 ms 696 KB contestant found the optimal answer: 900320000 == 900320000
11 Correct 2 ms 696 KB contestant found the optimal answer: 3698080248 == 3698080248
12 Correct 2 ms 744 KB contestant found the optimal answer: 3200320000 == 3200320000
13 Correct 2 ms 744 KB contestant found the optimal answer: 140072 == 140072
14 Correct 2 ms 744 KB contestant found the optimal answer: 376041456 == 376041456
15 Correct 2 ms 744 KB contestant found the optimal answer: 805 == 805
16 Correct 2 ms 744 KB contestant found the optimal answer: 900189994 == 900189994
17 Correct 2 ms 744 KB contestant found the optimal answer: 999919994 == 999919994
# Verdict Execution time Memory Grader output
1 Correct 2 ms 744 KB contestant found the optimal answer: 1093956 == 1093956
2 Correct 2 ms 744 KB contestant found the optimal answer: 302460000 == 302460000
3 Correct 2 ms 744 KB contestant found the optimal answer: 122453454361 == 122453454361
4 Correct 2 ms 744 KB contestant found the optimal answer: 93663683509 == 93663683509
5 Correct 2 ms 744 KB contestant found the optimal answer: 1005304678 == 1005304678
6 Correct 2 ms 792 KB contestant found the optimal answer: 933702 == 933702
7 Correct 2 ms 804 KB contestant found the optimal answer: 25082842857 == 25082842857
8 Correct 2 ms 804 KB contestant found the optimal answer: 687136 == 687136
9 Correct 2 ms 804 KB contestant found the optimal answer: 27295930079 == 27295930079
10 Correct 2 ms 804 KB contestant found the optimal answer: 29000419931 == 29000419931
# Verdict Execution time Memory Grader output
1 Correct 2 ms 864 KB contestant found the optimal answer: 610590000 == 610590000
2 Correct 2 ms 864 KB contestant found the optimal answer: 311760000 == 311760000
3 Correct 3 ms 868 KB contestant found the optimal answer: 1989216017013 == 1989216017013
4 Correct 2 ms 872 KB contestant found the optimal answer: 1499437552673 == 1499437552673
5 Correct 3 ms 876 KB contestant found the optimal answer: 1019625819 == 1019625819
6 Correct 3 ms 880 KB contestant found the optimal answer: 107630884 == 107630884
7 Correct 3 ms 884 KB contestant found the optimal answer: 475357671774 == 475357671774
8 Correct 2 ms 888 KB contestant found the optimal answer: 193556962 == 193556962
9 Correct 2 ms 896 KB contestant found the optimal answer: 482389919803 == 482389919803
10 Correct 2 ms 896 KB contestant found the optimal answer: 490686959791 == 490686959791
# Verdict Execution time Memory Grader output
1 Correct 3 ms 1540 KB contestant found the optimal answer: 21503404 == 21503404
2 Correct 3 ms 1540 KB contestant found the optimal answer: 140412195 == 140412195
3 Correct 8 ms 1544 KB contestant found the optimal answer: 49729674225461 == 49729674225461
4 Correct 3 ms 1552 KB contestant found the optimal answer: 37485571387523 == 37485571387523
5 Correct 11 ms 1560 KB contestant found the optimal answer: 679388326 == 679388326
6 Correct 10 ms 1564 KB contestant found the optimal answer: 4699030287 == 4699030287
7 Correct 11 ms 1568 KB contestant found the optimal answer: 12418819758185 == 12418819758185
8 Correct 8 ms 1576 KB contestant found the optimal answer: 31093317350 == 31093317350
9 Correct 4 ms 1580 KB contestant found the optimal answer: 12194625429236 == 12194625429236
10 Correct 6 ms 1584 KB contestant found the optimal answer: 12345131038664 == 12345131038664
# Verdict Execution time Memory Grader output
1 Correct 11 ms 8884 KB contestant found the optimal answer: 1818678304 == 1818678304
2 Correct 11 ms 9012 KB contestant found the optimal answer: 1326260195 == 1326260195
3 Correct 101 ms 9048 KB contestant found the optimal answer: 4973126687469639 == 4973126687469639
4 Correct 10 ms 9136 KB contestant found the optimal answer: 3748491676694116 == 3748491676694116
5 Correct 87 ms 9136 KB contestant found the optimal answer: 1085432199 == 1085432199
6 Correct 95 ms 9204 KB contestant found the optimal answer: 514790755404 == 514790755404
7 Correct 85 ms 9204 KB contestant found the optimal answer: 1256105310476641 == 1256105310476641
8 Correct 68 ms 9204 KB contestant found the optimal answer: 3099592898816 == 3099592898816
9 Correct 87 ms 9308 KB contestant found the optimal answer: 1241131419367412 == 1241131419367412
10 Correct 105 ms 9308 KB contestant found the optimal answer: 1243084101967798 == 1243084101967798
# Verdict Execution time Memory Grader output
1 Correct 126 ms 82488 KB contestant found the optimal answer: 19795776960 == 19795776960
2 Correct 123 ms 82804 KB contestant found the optimal answer: 19874432173 == 19874432173
3 Execution timed out 2053 ms 83196 KB Time limit exceeded
4 Halted 0 ms 0 KB -