#include #include #ifdef _MSC_VER #include #endif namespace atcoder { namespace internal { // @param n `0 <= n` // @return minimum non-negative `x` s.t. `n <= 2**x` int ceil_pow2(int n) { int x = 0; while ((1U << x) < (unsigned int)(n)) x++; return x; } // @param n `1 <= n` // @return minimum non-negative `x` s.t. `(n & (1 << x)) != 0` int bsf(unsigned int n) { #ifdef _MSC_VER unsigned long index; _BitScanForward(&index, n); return index; #else return __builtin_ctz(n); #endif } } // namespace internal } // namespace atcoder #include #include namespace atcoder { template struct segtree { public: segtree() : segtree(0) {} segtree(int n) : segtree(std::vector(n, e())) {} segtree(const std::vector& v) : _n(int(v.size())) { log = internal::ceil_pow2(_n); size = 1 << log; d = std::vector(2 * size, e()); for (int i = 0; i < _n; i++) d[size + i] = v[i]; for (int i = size - 1; i >= 1; i--) { update(i); } } void set(int p, S x) { assert(0 <= p && p < _n); p += size; d[p] = x; for (int i = 1; i <= log; i++) update(p >> i); } S get(int p) { assert(0 <= p && p < _n); return d[p + size]; } S prod(int l, int r) { assert(0 <= l && l <= r && r <= _n); S sml = e(), smr = e(); l += size; r += size; while (l < r) { if (l & 1) sml = op(sml, d[l++]); if (r & 1) smr = op(d[--r], smr); l >>= 1; r >>= 1; } return op(sml, smr); } S all_prod() { return d[1]; } template int max_right(int l) { return max_right(l, [](S x) { return f(x); }); } template int max_right(int l, F f) { assert(0 <= l && l <= _n); assert(f(e())); if (l == _n) return _n; l += size; S sm = e(); do { while (l % 2 == 0) l >>= 1; if (!f(op(sm, d[l]))) { while (l < size) { l = (2 * l); if (f(op(sm, d[l]))) { sm = op(sm, d[l]); l++; } } return l - size; } sm = op(sm, d[l]); l++; } while ((l & -l) != l); return _n; } template int min_left(int r) { return min_left(r, [](S x) { return f(x); }); } template int min_left(int r, F f) { assert(0 <= r && r <= _n); assert(f(e())); if (r == 0) return 0; r += size; S sm = e(); do { r--; while (r > 1 && (r % 2)) r >>= 1; if (!f(op(d[r], sm))) { while (r < size) { r = (2 * r + 1); if (f(op(d[r], sm))) { sm = op(d[r], sm); r--; } } return r + 1 - size; } sm = op(d[r], sm); } while ((r & -r) != r); return 0; } private: int _n, size, log; std::vector d; void update(int k) { d[k] = op(d[2 * k], d[2 * k + 1]); } }; } // namespace atcoder #include using namespace std; using namespace atcoder; #define rep(i,n) for (int i = 0; i < (n); ++i) #define modulo 1000000007 #define mod(mod_x) ((((long long)mod_x+modulo))%modulo) #define Inf 10000000000000 long double eps = 1e-9; struct Data{ long double r=0.0,theta=0.0; long double stheta = 0.0; }; Data op(Data a,Data b){ long double x = a.r * cos(a.theta) + b.r * cos(b.theta+a.stheta); long double y = a.r * sin(a.theta) + b.r * sin(b.theta+a.stheta); Data ret; ret.r = hypot(x,y); ret.theta = atan2(y,x); ret.stheta = a.stheta + b.stheta; return ret; } Data e(){ return Data(); } int main(){ int N,Q; cin>>N>>Q; Data temp = {1.0,0.0}; vector T(N+1,temp); T[0].r = 0.0; segtree seg(T); rep(_,Q){ int t; cin>>t; if(t==0){ int i,x; cin>>i>>x; Data D = seg.get(i); D.theta = (acos(-1.0)/180.0)*(long double)x; D.stheta = D.theta; seg.set(i,D); } else if(t==1){ int i,x; cin>>i>>x; Data D = seg.get(i); D.r = (long double)x; seg.set(i,D); } else{ int i; cin>>i; Data D = seg.prod(0,i+1); long double x = D.r * cos(D.theta); long double y = D.r * sin(D.theta); cout<