Submission #399923

#	Time	Username	Problem	Language	Result	Execution time	Memory
399923		GioChkhaidze	Worst Reporter 3 (JOI18_worst_reporter3)	C++14	19 / 100	2081 ms	8408 KiB

worst_reporter3

#include <bits/stdc++.h>

#define ll long long
#define pb push_back
#define f first
#define s second

using namespace std;

const int N = 5e5 + 5;

int n, q, d[N], e[N];
vector < pair < int , int > > v;
 
main () {
	ios::sync_with_stdio(false);
	cin.tie(NULL), cout.tie(NULL);
	cin >> n >> q;
	for (int i = 1; i <= n; ++i) {
		cin >> d[i];
	}
	
	for (int i = 1; i <= n; ++i) {
		if (!v.size() || d[v.back().f] < d[i]) {
			v.pb({i, 1});
		}
			else {
			++v.back().s;		
		}
	}
	
	int x = 1;
	for (int i = 0; i < v.size(); ++i) {
		e[i] = v[i].s;
		if (i) v[i].s += v[i - 1].s;
		v[i].f = x * ((d[v[i].f] - 1) / x + 1);
		x = v[i].f;
	}
	
	for (int i = v.size() - 2; i >= 0; --i) {
		v[i + 1].s = v[i].s;
	}
	v[0].s = 0;
	
	for (int i = 0; i < v.size(); ++i) {
		++v[i].s;
	}
	
	int t, l, r, sum, ans, L, R;
	for (int i = 1; i <= q; ++i) {
		cin >> t >> l >> r;
		if (t < l) {
			cout << 0 << "\n";
			continue;
		}
		
		sum = 1, ans = (l <= t && t <= r);
		for (int j = 0; j < v.size(); ++j) {
			R = t - v[j].s - t % v[j].f;
			if (R < l) break;
			L = R - e[j] + 1;	
			if (R > r) R = r;
			if (L < l) L = l;
			if (L <= R) ans += R - L + 1;
		}
		
		cout << ans << "\n";
	}
}

Compilation message (stderr)

worst_reporter3.cpp:15:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   15 | main () {
      |       ^
worst_reporter3.cpp: In function 'int main()':
worst_reporter3.cpp:33:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |  for (int i = 0; i < v.size(); ++i) {
      |                  ~~^~~~~~~~~~
worst_reporter3.cpp:45:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |  for (int i = 0; i < v.size(); ++i) {
      |                  ~~^~~~~~~~~~
worst_reporter3.cpp:58:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |   for (int j = 0; j < v.size(); ++j) {
      |                   ~~^~~~~~~~~~
worst_reporter3.cpp:49:15: warning: variable 'sum' set but not used [-Wunused-but-set-variable]
   49 |  int t, l, r, sum, ans, L, R;
      |               ^~~

• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 0 / 81