답안 #62728 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
62728	2018-07-29T22:24:40 Z	qkxwsm	Worst Reporter 3 (JOI18_worst_reporter3)	C++17	100 / 100	1700 ms	40324 KB

worst_reporter3

/*
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

#	결과	실행 시간	메모리	Grader output
1	Correct	1700 ms	13604 KB	Output is correct
2	Correct	1383 ms	14036 KB	Output is correct
3	Correct	1436 ms	29420 KB	Output is correct
4	Correct	1401 ms	39996 KB	Output is correct
5	Correct	1501 ms	40132 KB	Output is correct
6	Correct	1552 ms	40304 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	40304 KB	Output is correct
2	Correct	3 ms	40304 KB	Output is correct
3	Correct	4 ms	40304 KB	Output is correct
4	Correct	4 ms	40304 KB	Output is correct
5	Correct	5 ms	40304 KB	Output is correct
6	Correct	3 ms	40304 KB	Output is correct

Subtask #3
81.0 / 81.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1700 ms	13604 KB	Output is correct
2	Correct	1383 ms	14036 KB	Output is correct
3	Correct	1436 ms	29420 KB	Output is correct
4	Correct	1401 ms	39996 KB	Output is correct
5	Correct	1501 ms	40132 KB	Output is correct
6	Correct	1552 ms	40304 KB	Output is correct
7	Correct	4 ms	40304 KB	Output is correct
8	Correct	3 ms	40304 KB	Output is correct
9	Correct	4 ms	40304 KB	Output is correct
10	Correct	4 ms	40304 KB	Output is correct
11	Correct	5 ms	40304 KB	Output is correct
12	Correct	3 ms	40304 KB	Output is correct
13	Correct	710 ms	40304 KB	Output is correct
14	Correct	725 ms	40304 KB	Output is correct
15	Correct	711 ms	40304 KB	Output is correct
16	Correct	686 ms	40304 KB	Output is correct
17	Correct	912 ms	40304 KB	Output is correct
18	Correct	941 ms	40304 KB	Output is correct
19	Correct	1096 ms	40304 KB	Output is correct
20	Correct	1313 ms	40304 KB	Output is correct
21	Correct	952 ms	40304 KB	Output is correct
22	Correct	1165 ms	40304 KB	Output is correct
23	Correct	954 ms	40304 KB	Output is correct
24	Correct	1099 ms	40304 KB	Output is correct
25	Correct	1602 ms	40304 KB	Output is correct
26	Correct	1338 ms	40324 KB	Output is correct
27	Correct	1071 ms	40324 KB	Output is correct
28	Correct	937 ms	40324 KB	Output is correct
29	Correct	1105 ms	40324 KB	Output is correct
30	Correct	1239 ms	40324 KB	Output is correct
31	Correct	1134 ms	40324 KB	Output is correct
32	Correct	1265 ms	40324 KB	Output is correct
33	Correct	2 ms	40324 KB	Output is correct

답안 #62728

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 12.0 / 12.0

Subtask #3 81.0 / 81.0

Subtask #1
7.0 / 7.0

Subtask #2
12.0 / 12.0

Subtask #3
81.0 / 81.0