/* This Submission is to determine how many 120/240 min const. delivery point there are. //info 120 req. steps <= 5 */ #define _CRT_SECURE_NO_WARNINGS #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; typedef string::const_iterator State; #define Ma_PI 3.141592653589793 #define eps 1e-5 #define LONG_INF 1e18 #define GOLD 1.61803398874989484820458 #define MAX_MOD 1000000007LL #define MOD 998244353LL #define seg_size 262144 #define REP(a,b) for(long long a = 0;a < b;++a) unsigned long xor128() { static unsigned long x = time(NULL), y = 362436069, z = 521288629, w = 88675123; unsigned long t = (x ^ (x << 11)); x = y; y = z; z = w; return (w = (w ^ (w >> 19)) ^ (t ^ (t >> 8))); } double dot(complex a, complex b) { return a.real() * b.real() + a.imag() * b.imag(); } double gyaku_dot(complex a, complex b) { return a.real() * b.imag() - a.imag() * b.real(); } double leng(complex a) { return sqrt(a.real() * a.real() + a.imag() * a.imag()); } double angles(complex a, complex b) { double cosine = dot(a, b) / (leng(a) * leng(b)); double sine = gyaku_dot(a, b) / (leng(a) * leng(b)); double kaku = acos(min((double)1.0, max((double)-1.0, cosine))); if (sine <= 0) { kaku = 2 * Ma_PI - kaku; } return kaku; } vector convex_hull(vector> a) { vector ans; double now_minnest = a[0].real(); int now_itr = 0; REP(i, a.size()) { if (now_minnest > a[i].real()) { now_minnest = a[i].real(); now_itr = i; } } ans.push_back(now_itr); complex ba(0, 1); while (true) { int now_go = 0; double now_min = 0; double now_length = 0; int starter = ans[ans.size() - 1]; for (int i = 0; i < a.size(); ++i) { if (i != starter) { double goa = angles(ba, a[i] - a[starter]); if (goa - now_min >= eps || (abs(goa - now_min) <= eps && (abs(a[i] - a[starter]) - now_length) >= eps)) { now_min = goa; now_go = i; now_length = abs(a[i] - a[starter]); } } } if (now_go == ans[0]) break; ans.push_back(now_go); ba = complex(a[now_go] - a[starter]); } return ans; } long long dp[30][200000]; int main() { //セグ木ってなんだっけ? //ダブリングしましょう iostream::sync_with_stdio(false); cin.tie(0); int n, query; cin >> n >> query; REP(i, 30) { dp[i][n] = n; } vector> base_data; REP(i, n) { long long a; cin >> a; base_data.push_back(make_pair(a, i)); } sort(base_data.begin(), base_data.end()); reverse(base_data.begin(), base_data.end()); set geko; geko.insert(n); for (int i = 0; i < base_data.size(); ++i) { auto A = geko.lower_bound(base_data[i].second); dp[0][base_data[i].second] = *A; geko.insert(base_data[i].second); } for (int i = 1; i < 30; ++i) { for (int q = 0; q < n; ++q) { dp[i][q] = dp[i - 1][dp[i - 1][q]]; } } REP(i, query) { int a, b; cin >> a >> a >> b; a--; b--; int ans = 0; while (a <= b) { for (int q = 0; q < 30; ++q) { if (dp[q][a] > b) { int move = max(q - 1, 0); ans += 1 << move; a = dp[move][a]; break; } } } cout << ans << endl; } }