Submission #37718

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
37718	2017-12-27T08:41:36 Z	grumpy_gordon	K blocks (IZhO14_blocks)	C++14	14 / 100	936 ms	10392 KB

blocks

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#include <bits/stdc++.h>

//#pragma GCC optimize("O3")
//#pragma GCC optimize("Ofast,no-stack-protector")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx")
//#pragma GCC target("avx,tune=native")

using namespace std;

typedef long long ll;

typedef long double ld;

int mysqrt(ll x){
    int l = 0, r = 1e9 + 1;
    while (r - l > 1){
        int m = (l + r) / 2;
        if (m * (ll)m <= x)
            l = m;
        else
            r = m;
    }
    return l;
}

mt19937 rnd(1337);

ll AR = 19, BR = 13, CR = 23, XR = 228, YR = 322, MODR = 1e9 + 993;

ll myrand(){
    ll ZR = (XR * AR + YR * BR + CR) % MODR;
    XR = YR;
    YR = ZR;
    return ZR;
}

const int Mod = 1e9 + 7;

int bpow(int x, int y){
    if (y == 0)
        return 1;
    if (y == 1)
        return x;
    int ret = bpow(x, y >> 1);
    ret = (ret * (ll)ret) % Mod;
    if (y & 1)
        ret = (ret * (ll)x) % Mod;
    return ret;
}

int bdiv(int x, int y){
    return (x * (ll)bpow(y, Mod - 2)) % Mod;
}

void setmin(int &x, int y){
    x = min(x, y);
}

void setmax(int &x, int y){
    x = max(x, y);
}

const ll llinf = 1e18 + 100;

const int maxn = 1e5 + 100, inf = 1e9 + 100, sq = 300, mod = 1e9 + 7, LG = 17;

int n, k;

int a[maxn];

int sp[LG][maxn];

int splast[maxn];

int getmin(int l, int r){
    int lg = splast[r - l + 1];
    return max(sp[lg][l], sp[lg][r - (1 << lg) + 1]);
}

int dp[2][maxn];

void go(int l, int r, int opl, int opr){
    if (l > r)
        return;
    int m = (l + r) / 2;
    int opm = opr;
    int val = inf;
    for (int i = opl; i <= min(opr, m - 1); i++)
        if (dp[0][i] != inf && dp[0][i] + getmin(i + 1, m) <= val)
            val = dp[0][i] + getmin(i + 1, m), opm = i;
    dp[1][m] = val;
    go(l, m - 1, opm, opr);
    go(m + 1, r, opl, opm);
}

void go1(int l, int r, int opl, int opr){
    if (l > r)
        return;
    int m = (l + r) / 2;
    int opm = opl;
    int val = inf;
    for (int i = opl; i <= min(opr, m - 1); i++)
        if (dp[0][i] != inf && dp[0][i] + getmin(i + 1, m) <= val)
            val = dp[0][i] + getmin(i + 1, m), opm = i;
    setmin(dp[1][m], val);
    go1(l, m - 1, opl, opm);
    go1(m + 1, r, opm, opr);
}

int main()
{
    #ifdef ONPC
    //ifstream cin("a.in");
    //ofstream cout("a.out");
    freopen("a.in", "r", stdin);
    freopen("a.out", "w", stdout);
    #else
    //ifstream cin("a.in");
    //ofstream cout("a.out");
    //freopen("trap.in", "r", stdin);
    //freopen("trap.out", "w", stdout);
    #endif // ONPC
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> k;
    splast[1] = 0;
    for (int i = 2; i <= n; i++){
        splast[i] = splast[i - 1];
        if ((1 << (splast[i] + 1)) == i)
            splast[i]++;
    }
    for (int i = 0; i < n; i++)
        cin >> a[i], sp[0][i] = a[i];
    for (int j = 1; j < LG; j++)
        for (int i = 0; i + (1 << j) <= n; i++)
            sp[j][i] = max(sp[j - 1][i], sp[j - 1][i + (1 << (j - 1))]);
    dp[1][0] = a[0];
    for (int i = 1; i < n; i++)
        dp[1][i] = max(dp[1][i - 1], a[i]);
    while (--k){
        for (int i = 0; i < n; i++)
            dp[0][i] = dp[1][i];
        go(0, n - 1, 0, n - 1);
        go1(0, n - 1, 0, n - 1);
        /*for (int i = 0; i < n; i++)
            cout << dp[1][i] << ' ';
        cout << '\n';
        for (int i = 0; i < n; i++){
            int val = inf;
            for (int j = 0; j < i; j++)
                val = min(val, dp[0][j] + getmin(j + 1, i));
            cout << val << ' ';
            //assert(val == dp[1][i]);
        }
        cout << '\n' << '\n';*/
    }
    cout << dp[1][n - 1];
}

Subtask #1
14.0 / 14.0

#	Verdict	Memory	Grader output
1	Correct	10392 KB	Output is correct
2	Correct	10392 KB	Output is correct
3	Correct	10392 KB	Output is correct
4	Correct	10392 KB	Output is correct
5	Correct	10392 KB	Output is correct
6	Correct	10392 KB	Output is correct
7	Correct	10392 KB	Output is correct
8	Correct	10392 KB	Output is correct
9	Correct	10392 KB	Output is correct
10	Correct	10392 KB	Output is correct
11	Correct	10392 KB	Output is correct
12	Correct	10392 KB	Output is correct
13	Correct	10392 KB	Output is correct
14	Correct	10392 KB	Output is correct
15	Correct	10392 KB	Output is correct
16	Correct	10392 KB	Output is correct
17	Correct	10392 KB	Output is correct
18	Correct	10392 KB	Output is correct

Subtask #2
0 / 18.0

#	Verdict	Memory	Grader output
1	Correct	10392 KB	Output is correct
2	Correct	10392 KB	Output is correct
3	Correct	10392 KB	Output is correct
4	Correct	10392 KB	Output is correct
5	Correct	10392 KB	Output is correct
6	Correct	10392 KB	Output is correct
7	Correct	10392 KB	Output is correct
8	Correct	10392 KB	Output is correct
9	Correct	10392 KB	Output is correct
10	Correct	10392 KB	Output is correct
11	Correct	10392 KB	Output is correct
12	Correct	10392 KB	Output is correct
13	Correct	10392 KB	Output is correct
14	Correct	10392 KB	Output is correct
15	Correct	10392 KB	Output is correct
16	Correct	10392 KB	Output is correct
17	Incorrect	10392 KB	Output isn't correct
18	Halted	0 KB	-

Subtask #3
0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	0 ms	10392 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4
0 / 47.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	19 ms	10392 KB	Output is correct
2	Correct	3 ms	10392 KB	Output is correct
3	Correct	33 ms	10392 KB	Output is correct
4	Correct	306 ms	10392 KB	Output is correct
5	Incorrect	936 ms	10392 KB	Output isn't correct
6	Halted	0 ms	0 KB	-

Submission #37718

Compilation message

Subtask #1 14.0 / 14.0

Subtask #2 0 / 18.0

Subtask #3 0 / 21.0

Subtask #4 0 / 47.0

Subtask #1
14.0 / 14.0

Subtask #2
0 / 18.0

Subtask #3
0 / 21.0

Subtask #4
0 / 47.0