oj.uz

Submission #1113179

# Submission time Handle Problem Language Result Execution time Memory
1113179 2024-11-16T02:35:36 Z huyngodzz Feast (NOI19_feast) C++14
41 / 100
 40 ms 61028 KB 
    ///huynhocute123///
#include<bits/stdc++.h>
using namespace std;
#define S second
#define F first
#define pii pair<int,int>
#define piii pair<int,pair<int,int>>
#define pb push_back
#define FOR(i, a, b) for(int i = a; i <= b; ++i)
#define REP(i, a, b) for(int i = b; i >= a; --i)
#define ALL(v) v.begin(),v.end()
#define inp(name) if(fopen(name, "r")) freopen(name, "r", stdin);
#define out(name) if(fopen(name, "w")) freopen(name, "w", stdout);
//random_device rd;
//mt19937 rng(rd());
//#pragma GCC optimize ("O3")
//#pragma GCC optimize ("unroll-loops")
//#pragma GCC target("popcnt")
//#define int long long
const int maxN =  2009;
const int  mod = 1e9 + 7;
const int base = 2309;
const int MAX = 1e9+9;
const double pi = 3.14159265358979323846;
const double rad = 3.14159265358979323846 /180;
bool minimize(int &u, int v){
    if(v < u){
        u = v;
        return 1;
    }
    return 0;
}
bool maximize(int &u, int v){
    if(v > u){
        u = v;
        return 1;
    }
    return 0;
}
bool maximizell(long long &u, long long v){
    if(v > u){
        u = v;
        return 1;
    }
    return 0;
}
bool minimizell(long long &u, long long v){
    if(v < u){
        u = v;
        return 1;
    }
    return 0;
}
inline int fastPow(int a, int n){
    if(n == 0) return 1;
    int t = fastPow(a, n >> 1);
    t = 1ll * t * t % mod;
    if(n & 1) t = 1ll * t * a % mod;
    return t;
}
int n  , k;
long long a[maxN] , dp[maxN][maxN], g[maxN][maxN], res;
bool check1(){
    FOR(i, 1, n)if(a[i] <0)return 0;
    return 1;
}
void sub1(){
        FOR(i,1,n) res += a[i];
        cout<<res;
        exit(0);
}
bool check2(){
    int cnt =0;
    FOR(i, 1, n)if(a[i] <0)++cnt;
    return (cnt == 1);
}
void sub2(){
        int pos = 0;
        FOR(i,1,n) if(a[i] < 0){
            pos = i;
            break;
        }
        long long sum1 = 0, sum2 = 0;
        FOR(i,1,pos - 1) sum1 += a[i];
        FOR(i,pos + 1,n) sum2 += a[i];
        if(k > 1) cout<<sum1 + sum2;
        else{
            long long sum = sum1 + sum2 + a[pos];
            cout<<max({sum, sum1, sum2});
        }
        exit(0);

}
void sub3(){
    long long sum =0;
    FOR(i,1,n){
        sum += a[i];
        maximizell(res, sum);
        maximizell(sum, 0LL);
    }
        cout<<res;
        exit(0);

}
bool check3(){
    return (k ==1);
}
inline void solve(){
    cin >>  n >>k;
    FOR(i, 1, n)cin >> a[i];
    if(check1())return sub1();
    if(check2())return sub2();
    if(check3())return sub3();
    FOR(i, 1, n){
        FOR(j, 1, k){
            dp[i][j] = dp[i-1][j] + a[i];
            maximizell(dp[i][j] , g[i-1][j-1] + a[i]);
            maximizell(g[i][j] , g[i-1][j]);
            maximizell(g[i][j] , dp[i][j]);
        }
    }
    FOR(i, 1, k)maximizell(res, g[n][i]);
    cout << res;

}
signed main(){
//    freopen("name.inp","r",stdin);
//    freopen("name.out","w",stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    inp("task.inp");
    int tc = 1;
   // cin >> tc;
    while( tc-- )solve();
    cerr << '\n' << "Time elapsed: " << (1.0 * clock() / CLOCKS_PER_SEC) << " s\n" ;


}

Compilation message

feast.cpp: In function 'int main()':
feast.cpp:12:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define inp(name) if(fopen(name, "r")) freopen(name, "r", stdin);
      |                                        ~~~~~~~^~~~~~~~~~~~~~~~~~
feast.cpp:131:5: note: in expansion of macro 'inp'
  131 |     inp("task.inp");
      |     ^~~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 1104 KB Output is correct
3 Correct 1 ms 848 KB Output is correct
4 Correct 1 ms 848 KB Output is correct
5 Correct 1 ms 1104 KB Output is correct
6 Correct 1 ms 892 KB Output is correct
7 Correct 1 ms 1104 KB Output is correct
8 Correct 1 ms 848 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 1016 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 1104 KB Output is correct
3 Correct 1 ms 848 KB Output is correct
4 Correct 1 ms 848 KB Output is correct
5 Correct 1 ms 1104 KB Output is correct
6 Correct 1 ms 892 KB Output is correct
7 Correct 1 ms 1104 KB Output is correct
8 Correct 1 ms 848 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 1016 KB Output is correct
11 Correct 2 ms 2896 KB Output is correct
12 Correct 2 ms 2640 KB Output is correct
13 Correct 2 ms 2640 KB Output is correct
14 Correct 2 ms 2640 KB Output is correct
15 Correct 2 ms 2640 KB Output is correct
16 Correct 2 ms 2640 KB Output is correct
17 Correct 2 ms 2896 KB Output is correct
18 Correct 3 ms 2640 KB Output is correct
19 Correct 2 ms 2472 KB Output is correct
20 Correct 2 ms 2640 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 1104 KB Output is correct
3 Correct 1 ms 848 KB Output is correct
4 Correct 1 ms 848 KB Output is correct
5 Correct 1 ms 1104 KB Output is correct
6 Correct 1 ms 892 KB Output is correct
7 Correct 1 ms 1104 KB Output is correct
8 Correct 1 ms 848 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 1016 KB Output is correct
11 Correct 2 ms 2896 KB Output is correct
12 Correct 2 ms 2640 KB Output is correct
13 Correct 2 ms 2640 KB Output is correct
14 Correct 2 ms 2640 KB Output is correct
15 Correct 2 ms 2640 KB Output is correct
16 Correct 2 ms 2640 KB Output is correct
17 Correct 2 ms 2896 KB Output is correct
18 Correct 3 ms 2640 KB Output is correct
19 Correct 2 ms 2472 KB Output is correct
20 Correct 2 ms 2640 KB Output is correct
21 Correct 14 ms 22096 KB Output is correct
22 Correct 40 ms 61028 KB Output is correct
23 Correct 18 ms 27728 KB Output is correct
24 Correct 14 ms 22608 KB Output is correct
25 Correct 17 ms 25680 KB Output is correct
26 Correct 15 ms 21816 KB Output is correct
27 Correct 16 ms 24912 KB Output is correct
28 Correct 11 ms 17268 KB Output is correct
29 Correct 11 ms 17232 KB Output is correct
30 Correct 11 ms 15952 KB Output is correct

Subtask #7
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 KB Output isn't correct
2 Halted 0 ms 0 KB -