#include using namespace std; #define fs first #define sc second #define pb push_back #define mp make_pair #define eb emplace_back #define ALL(a) a.begin(),a.end() #define RALL(a) a.rbegin(),a.rend() typedef long long LL; typedef pair P; const LL mod=1000000007; const LL LINF=1LL<<62; const int INF=1<<30; template struct SegmentTree{ private: int n; vector node; public: SegmentTree(vector v){ int sz = v.size(); n = 1; while(n < sz) n *= 2; node.resize(2*n-1, mp(INF,INF)); for (int i = 0; i < sz; i++) node[i+n-1] = v[i]; //vの段階でvector> として引数で渡す for (int i = n-2; i >= 0; i--) node[i] = min(node[2*i+1],node[2*i+2]); } void update(int x, T val) { // T は class なので pair かな x += n - 1; node[x] = val; while (x > 0) { x = (x - 1) / 2; node[x] = min(node[2*x+1],node[2*x+2]); } } T getmin (int a, int b, int k=0, int l=0, int r=-1) { if(r < 0) r = n; if(r <= a || b <= l) return mp(INF,INF); if(a <= l && r <= b) return node[k]; T vl = getmin(a, b, 2 * k + 1, l, (l + r) / 2); T vr = getmin(a, b, 2 * k + 2, (l + r) / 2, r); return min(vl,vr); } }; int main(){ int n, q; cin >> n >> q; vector

v(n); for (int i = 0; i < n; i++) { cin >> v[i].fs; v[i].sc = i; } SegmentTree

seg(v); while (q--) { int query_type, l, r; cin >> query_type >> l >> r; if (query_type == 1) { // 値を交換する -- l, -- r; // 1index だからデクリメント auto p = seg.getmin(l, l+1); // l を一時的に p に保存. → l に r を渡す → r に p を渡す seg.update(l, mp(seg.getmin(r, r+1).fs, l)); seg.update(r, mp(p.fs, r)); //TODO この辺って(l, node[r+n-1])でも行けるのでは?? } else { --l; cout << seg.getmin(l, r).sc + 1 << endl; } } }