oj.uz

Submission #82981

# Submission time Handle Problem Language Result Execution time Memory
82981 2018-11-03T12:44:36 Z rezolden K blocks (IZhO14_blocks) C++14
0 / 100
 6 ms 784 KB 
#include <bits/stdc++.h>

#define maxn 100010
#define maxk 110
#define FOR(i,a,b) for(int i=a;i<=b;++i)
#define FORD(i,a,b) for(int i=a;i>=b;--i)

typedef long long ll;
using namespace std;
const char *fi="BLOCKS.INP";
const char *fo="BLOCKS.OUT";

int n,k,A[maxn],P[maxn];
ll F[maxn][maxk];

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	freopen(fi,"r",stdin);
//	freopen(fo,"w",stdout);
    cin>>n>>k;
    FOR(i,1,n) cin>>A[i];
    P[0]=0;
    FOR(i,1,n) P[i]=max(P[i-1],A[i]);

    FOR(i,1,n) F[i][1]=P[i];
    FOR(j,2,k){
        int maxright=0; ll sumleft=F[j-1][j-1];
        FOR(i,j,n){
            maxright = max(maxright,A[i]);
//            cout<<i<<' '<<j<<' '<<sumleft<<' '<<maxright<<' '<<(F[i-1][j-1]+P[i-1]+A[i])<<endl;
            if (sumleft+maxright < F[i-1][j-1]+A[i]) F[i][j]=sumleft+maxright;
            else {
                sumleft = F[i-1][j-1];
                maxright = A[i];
                F[i][j]=F[i-1][j-1]+A[i];
            }
        }
    }

    cout<<F[n][k];
	return 0;
}

Compilation message

blocks.cpp: In function 'int main()':
blocks.cpp:18:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen(fi,"r",stdin);
  ~~~~~~~^~~~~~~~~~~~~~

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 668 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 780 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 784 KB Output isn't correct
2 Halted 0 ms 0 KB -