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Submission #15817

# Submission time Handle Problem Language Result Execution time Memory
15817 2015-07-30T06:08:43 Z joonas 전봇대 (KOI13_pole) C++
100 / 100
 44 ms 2112 KB 
#include <cstdio>
#include <cstdlib>
#include <iostream>

typedef long long int lld;

inline lld min(lld a, lld b){return a>b?b:a;}

lld sum(int *A, int N, int d){
    lld r=0;
    for(int i=0; i<N; ++i) r+=std::abs((1LL)*d*i-A[i]);
    return r;
}

int A[100001];

int main(){
    int i, N;
    scanf("%d",&N);
    for(i=0;i<N;++i) scanf("%d", &A[i]);
    lld L=0, R=1000000000;
    while(L<=R){
        lld d=(L+R)/2;
        if(sum(A,N,d)<sum(A,N,d+1)) R=d-1;
        else L=d+1;
    }
    printf("%lld\n", sum(A,N,L));
    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2112 KB Output is correct
2 Correct 0 ms 2112 KB Output is correct
3 Correct 0 ms 2112 KB Output is correct
4 Correct 0 ms 2112 KB Output is correct
5 Correct 0 ms 2112 KB Output is correct
6 Correct 0 ms 2112 KB Output is correct
7 Correct 0 ms 2112 KB Output is correct
8 Correct 0 ms 2112 KB Output is correct
9 Correct 0 ms 2112 KB Output is correct
10 Correct 0 ms 2112 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2112 KB Output is correct
2 Correct 0 ms 2112 KB Output is correct
3 Correct 0 ms 2112 KB Output is correct
4 Correct 0 ms 2112 KB Output is correct
5 Correct 0 ms 2112 KB Output is correct
6 Correct 0 ms 2112 KB Output is correct
7 Correct 0 ms 2112 KB Output is correct
8 Correct 0 ms 2112 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2112 KB Output is correct
2 Correct 1 ms 2112 KB Output is correct
3 Correct 5 ms 2112 KB Output is correct
4 Correct 5 ms 2112 KB Output is correct
5 Correct 5 ms 2112 KB Output is correct
6 Correct 5 ms 2112 KB Output is correct

Subtask #4
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 2112 KB Output is correct
2 Correct 44 ms 2112 KB Output is correct
3 Correct 40 ms 2112 KB Output is correct
4 Correct 38 ms 2112 KB Output is correct
5 Correct 28 ms 2112 KB Output is correct
6 Correct 22 ms 2112 KB Output is correct