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답안 #533495

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
533495 2022-03-06T08:00:14 Z idas Feast (NOI19_feast) C++11
4 / 100
 53 ms 5696 KB 
#include <bits/stdc++.h>
#define FOR(i, begin, end) for(int i = (begin); i < (end); i++)
#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(nullptr); cout.tie(nullptr)
#define f first
#define s second
#define pb push_back
#define sz(x) ((int)((x).size()))
#define le(vec) vec[vec.size()-1]
#define all(x) (x).begin(), (x).end()
#define TSTS int ttt; cin >> ttt; while(ttt--) solve()

using namespace std;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long double, long double> pdd;
typedef map<int, int> mii;
typedef vector<int> vi;
typedef long double ld;
typedef long long ll;

const int INF=1e9, MOD=1e9+7, mod=998244353;
const ll LINF=1e18;

void setIO()
{
    FAST_IO;
}

void setIO(string s)
{
    FAST_IO;
    freopen((s+".in").c_str(), "r", stdin);
    freopen((s+".out").c_str(), "w", stdout);
}

const int N=3e5+10;
ll n, k, a[N];

int main()
{
    setIO();
    cin >> n >> k;
    FOR(i, 0, n) cin >> a[i];
    vector<ll> nw;
    bool tg=a[0]>0;
    ll now=0;
    FOR(i, 0, n)
    {
        if(a[i]==0) continue;
        if(a[i]>0 && !tg){
            tg=true;
            if(now!=0)
            nw.pb(now);
            now=a[i];
        }
        else if(a[i]<0 && tg){
            tg=false;
            if(now!=0)
            nw.pb(now);
            now=a[i];
        }
        else{
            now+=a[i];
        }
    }
    nw.pb(now);
    n=sz(nw);

    FOR(i, 0, n) a[i]=nw[i];

    FOR(i, 0, n)
    {
        if(a[i]<0){
            if(i!=0) a[i]=max(-a[i-1], a[i]);
            if(i!=n-1) a[i]=max(-a[i+1], a[i]);
        }
    }

    ll sm=0;
    vector<ll> negs;
    FOR(i, 0, n)
    {
        if(a[i]<0) negs.pb(a[i]);
        sm+=a[i];
    }

    sort(all(negs));

    FOR(i, 0, k)
    {
        if(i>=sz(negs)) break;
        sm-=negs[i];
    }

    cout << sm;
}

Compilation message

feast.cpp: In function 'void setIO(std::string)':
feast.cpp:32:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |     freopen((s+".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
feast.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen((s+".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 2796 KB Output is correct
2 Correct 38 ms 2932 KB Output is correct
3 Correct 33 ms 2948 KB Output is correct
4 Correct 33 ms 2896 KB Output is correct
5 Correct 37 ms 2816 KB Output is correct
6 Correct 29 ms 2880 KB Output is correct
7 Correct 28 ms 2892 KB Output is correct
8 Correct 31 ms 2884 KB Output is correct
9 Correct 34 ms 2956 KB Output is correct
10 Correct 31 ms 2872 KB Output is correct

Subtask #2
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 20 ms 2884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 53 ms 5696 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 304 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 304 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 304 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 2796 KB Output is correct
2 Correct 38 ms 2932 KB Output is correct
3 Correct 33 ms 2948 KB Output is correct
4 Correct 33 ms 2896 KB Output is correct
5 Correct 37 ms 2816 KB Output is correct
6 Correct 29 ms 2880 KB Output is correct
7 Correct 28 ms 2892 KB Output is correct
8 Correct 31 ms 2884 KB Output is correct
9 Correct 34 ms 2956 KB Output is correct
10 Correct 31 ms 2872 KB Output is correct
11 Incorrect 20 ms 2884 KB Output isn't correct
12 Halted 0 ms 0 KB -