oj.uz

Submission #62727

# Submission time Handle Problem Language Result Execution time Memory
62727 2018-07-29T22:23:09 Z qkxwsm Worst Reporter 3 (JOI18_worst_reporter3) C++14
100 / 100
 1777 ms 174036 KB 
/*
PROG: source
LANG: C++11
    _____
  .'     '.
 /  0   0  \
|     ^     |
|  \     /  |
 \  '---'  /
  '._____.'
 */
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

struct chash
{
    int operator()(int x) const
	{
		x ^= (x >> 20) ^ (x >> 12);
    	return x ^ (x >> 7) ^ (x >> 4);
	}
	int operator()(long long x) const
	{
		return x ^ (x >> 32);
	}
};

template<typename T> using orderedset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using hashtable = gp_hash_table<T, U, chash>;

template<class T>
void readi(T &x)
{
	T input = 0;
	bool negative = false;
	char c = ' ';
	while (c < '-')
	{
		c = getchar();
	}
	if (c == '-')
	{
		negative = true;
		c = getchar();
	}
	while (c >= '0')
	{
		input = input * 10 + (c - '0');
		c = getchar();
	}
	if (negative)
	{
		input = -input;
	}
	x = input;
}
template<class T>
void printi(T output)
{
	if (output == 0)
	{
		putchar('0');
		return;
	}
	if (output < 0)
	{
		putchar('-');
		output = -output;
	}
	int aout[20];
	int ilen = 0;
	while(output)
	{
		aout[ilen] = ((output % 10));
		output /= 10;
		ilen++;
	}
	for (int i = ilen - 1; i >= 0; i--)
	{
		putchar(aout[i] + '0');
	}
	return;
}
template<class T>
void ckmin(T &a, T b)
{
	a = min(a, b);
}
template<class T>
void ckmax(T &a, T b)
{
	a = max(a, b);
}
template<class T>
T normalize(T x, T mod = 1000000007)
{
	return (((x % mod) + mod) % mod);
}
long long randomizell(long long mod)
{
	return ((1ll << 45) * rand() + (1ll << 30) * rand() + (1ll << 15) * rand() + rand()) % mod;
}
int randomize(int mod)
{
	return ((1ll << 15) * rand() + rand()) % mod;
}

#define y0 ___y0
#define y1 ___y1
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define PF push_front
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define debug(x) cerr << #x << " = " << x << endl;

const long double PI = 4.0 * atan(1.0);
const long double EPS = 1e-10;

#define MAGIC 347
#define SINF 10007
#define CO 1000007
#define INF 1000000007
#define BIG 1000000931
#define LARGE 1696969696967ll
#define GIANT 2564008813937411ll
#define LLINF 2696969696969696969ll
#define MAXN 500013

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<ld, ld> pdd;

int N, Q;
ll per[MAXN], dis[MAXN];

ll getpos(int idx, ll t)
{
    if (LLINF / dis[idx] < (t / per[idx])) return LLINF;
    return dis[idx] * (t / per[idx]) - idx;
}
int solve(ll t, ll pos)
{
    //how many guys have position >= pos?
    int lo = -1, hi = N;
    while(hi > lo)
    {
        int mid = (hi + lo + 1) / 2;
        if (getpos(mid, t) >= pos)
        {
            lo = mid;
        }
        else
        {
            hi = mid - 1;
        }
    }
    return lo + 1;
}

int32_t main()
{
	// ios_base::sync_with_stdio(0);
	srand(time(0));
	//	cout << fixed << setprecision(10);
	//	cerr << fixed << setprecision(10);
	if (fopen("input.in", "r"))
	{
		freopen ("input.in", "r", stdin);
		freopen ("output.out", "w", stdout);
	}
    readi(N); readi(Q);
    per[0] = 1; dis[0] = 1;
    for (int i = 1; i <= N; i++)
    {
        ll d;
        readi(d);
        ll frq = (d + dis[i - 1] - 1) / (dis[i - 1]);
        if (LLINF / frq < per[i - 1])
        {
            N = i - 1;
            break;
        }
        per[i] = per[i - 1] * frq;
        dis[i] = dis[i - 1] * frq;
        // cerr << "guy " << i << " moves " << dis[i] << " every " << per[i] << endl;
    }
    while(Q--)
    {
        ll t, lt, rt;
        readi(t); readi(lt); readi(rt);
        printi(solve(t, lt) - solve(t, rt + 1));
        putchar('\n');
    }
	//	cerr << "time elapsed = " << (clock() / (CLOCKS_PER_SEC / 1000)) << " ms" << endl;
	return 0;
}

Compilation message

worst_reporter3.cpp: In function 'int32_t main()':
worst_reporter3.cpp:178:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen ("input.in", "r", stdin);
   ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
worst_reporter3.cpp:179:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen ("output.out", "w", stdout);
   ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1270 ms 11376 KB Output is correct
2 Correct 1307 ms 12144 KB Output is correct
3 Correct 1341 ms 27328 KB Output is correct
4 Correct 1454 ms 40896 KB Output is correct
5 Correct 1541 ms 41028 KB Output is correct
6 Correct 1777 ms 41028 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 41028 KB Output is correct
2 Correct 4 ms 41028 KB Output is correct
3 Correct 4 ms 41028 KB Output is correct
4 Correct 3 ms 41028 KB Output is correct
5 Correct 4 ms 41028 KB Output is correct
6 Correct 4 ms 41028 KB Output is correct

Subtask #3
81.0 / 81.0

# Verdict Execution time Memory Grader output
1 Correct 1270 ms 11376 KB Output is correct
2 Correct 1307 ms 12144 KB Output is correct
3 Correct 1341 ms 27328 KB Output is correct
4 Correct 1454 ms 40896 KB Output is correct
5 Correct 1541 ms 41028 KB Output is correct
6 Correct 1777 ms 41028 KB Output is correct
7 Correct 5 ms 41028 KB Output is correct
8 Correct 4 ms 41028 KB Output is correct
9 Correct 4 ms 41028 KB Output is correct
10 Correct 3 ms 41028 KB Output is correct
11 Correct 4 ms 41028 KB Output is correct
12 Correct 4 ms 41028 KB Output is correct
13 Correct 869 ms 41028 KB Output is correct
14 Correct 711 ms 41028 KB Output is correct
15 Correct 734 ms 41028 KB Output is correct
16 Correct 764 ms 41028 KB Output is correct
17 Correct 954 ms 41028 KB Output is correct
18 Correct 1138 ms 41028 KB Output is correct
19 Correct 1214 ms 41028 KB Output is correct
20 Correct 1163 ms 41028 KB Output is correct
21 Correct 983 ms 41028 KB Output is correct
22 Correct 944 ms 41028 KB Output is correct
23 Correct 983 ms 41028 KB Output is correct
24 Correct 876 ms 41028 KB Output is correct
25 Correct 1771 ms 56668 KB Output is correct
26 Correct 1360 ms 72176 KB Output is correct
27 Correct 1143 ms 89836 KB Output is correct
28 Correct 1092 ms 107824 KB Output is correct
29 Correct 1030 ms 125364 KB Output is correct
30 Correct 1054 ms 143228 KB Output is correct
31 Correct 1065 ms 160856 KB Output is correct
32 Correct 975 ms 174036 KB Output is correct
33 Correct 4 ms 174036 KB Output is correct