Submission #485063

#	Time	Username	Problem	Language	Result	Execution time	Memory
485063		socho	Fire (JOI20_ho_t5)	C++14	1 / 100	2 ms	460 KiB

ho_t5

/*
 Going for Subtask 1
*/
#include <bits/stdc++.h>
using namespace std;
void fast() {
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
}
void ran() {
	srand(chrono::steady_clock::now().time_since_epoch().count());
}
long long get_rand() {
	long long a = rand();
	long long b = rand();
	return a * (RAND_MAX + 1ll) + b;
}
void usaco() {
	freopen("problem.in", "r", stdin); 
	freopen("problem.out", "w", stdout);
}
template<typename T>
using min_pq = priority_queue<T, vector<T>, greater<T>>;
#define endl '\n'
// #define double long double
#define int long long
// const int MOD = 1000 * 1000 * 1000 + 7;
// const int MOD = 998244353;
// #define cerr if(0) cerr
#define debug(x) cerr << #x << ": " << x << endl;

int n, q;
const int MXN = 205;
int arr[MXN];

signed main() {

	ran(); fast();

	cin >> n >> q;
	for (int i=1; i<=n; i++) cin >> arr[i];
	
	for (int QRY=0; QRY<q; QRY++) {
		int t, l, r;
		cin >> t >> l >> r;
		int ans = 0;
		for (int i=l; i<=r; i++) {
			// max [i-t...i]
			int here = 0;
			for (int j=max(1ll, i - t); j<=i; j++) here = max(here, arr[j]);
			ans += here;
		}
		cout << ans << endl;
	}

}

Compilation message (stderr)

ho_t5.cpp: In function 'void usaco()':
ho_t5.cpp:18:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |  freopen("problem.in", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
ho_t5.cpp:19:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  freopen("problem.out", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 0 / 6
• Subtask 3: 0 / 7
• Subtask 4: 0 / 6
• Subtask 5: 0 / 80