/*
_ _ _ __ __ _____
/\ | | /\ | | | | | \/ |/ ____|
/ \ | |__ ___ / \ | |__ __| | ___ | \ / | |
/ /\ \ | '_ \ / _ \ / /\ \ | '_ \ / _` |/ _ \| |\/| | |
/ ____ \| |_) | (_) / ____ \| |_) | (_| | (_) | | | | |____
/_/ \_\_.__/ \___/_/ \_\_.__/ \__,_|\___/|_| |_|\_____|
*/
// build command:
// g++ -o "exe" "%f" -Wall -Wextra -pedantic -std=c++11 -O2 -Wshadow -Wformat=2 -Wfloat-equal -Wconversion -Wlogical-op -Wshift-overflow=2 -Wduplicated-cond -Wcast-qual -Wcast-align -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC -D_FORTIFY_SOURCE=2 -fsanitize=address -fsanitize=undefined -fno-sanitize-recover -fstack-protector -D LOCAL -Wno-unused-result
#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) { os << '{'; string sep; for (const T &x : v) os << sep << x, sep = ", "; return os << '}'; }
void dbg_out() { cerr << endl; }
template<typename Head, typename... Tail> void dbg_out(Head H, Tail... T) { cerr << ' ' << H; dbg_out(T...); }
#ifdef LOCAL
#define dbg(...) cerr << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif
#define F first
#define S second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) ((int)(x).size())
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
// -------------------------<RNG>-------------------------
// RANDOM NUMBER GENERATOR
mt19937 RNG(chrono::steady_clock::now().time_since_epoch().count());
#define SHUF(v) shuffle(all(v), RNG);
// Use mt19937_64 for 64 bit random numbers.
int getrand(int l,int r) {
return uniform_int_distribution<int>(l, r)(RNG);
}
const ld eps = 1e-9;
const int mod = 1e9 + 7;
const int oo = 1e9 + 7;
const ll lloo = 1e18 + 7;
const int N = 1e6 + 7;
int n,q;
struct node {
int mn;
node(int _mn = oo) : mn(_mn) {}
};
struct ST {
#define lc (id<<1)
#define rc ((id<<1)|1)
#define mid (l+(r-l)/2)
vector<node> seg;
ST() {seg.resize(n*4);}
inline node merge(node left,node right) {
node ret;
ret.mn = (left.mn < right.mn) ? left.mn:right.mn;
return ret;
}
inline void pull(int id) {
seg[id] = merge(seg[lc],seg[rc]);
}
void build(int l = 0,int r = n-1,int id = 1) {
if (l == r) {
seg[id].mn = oo;
return;
}
build(l,mid,lc);
build(mid+1,r,rc);
pull(id);
}
void upd(int i,int x,int l = 0,int r = n-1,int id = 1) {
if (l == r) {
seg[id] = node(x);
return;
}
if (i <= mid) upd(i,x,l,mid,lc);
else upd(i,x,mid+1,r,rc);
pull(id);
}
int query(int y,int b,int l = 0,int r = n-1,int id = 1) {
dbg(l,r,y,b);
if (r < b) return -1;
if (l < b) {
int ret1 = query(y,b,l,mid,id*2);
if (ret1 != -1) return ret1;
return query(y,b,mid+1,r,id*2+1);
}
if (l == r) return (seg[id].mn <= y) ? l+1:-1;
if (seg[id*2].mn <= y) return query(y,b,l,mid,id*2);
return query(y,b,mid+1,r,id*2+1);
}
};
void solve() {
scanf("%d %d",&n,&q);
ST segtree;
segtree.build();
for(int j = 0 ; j < q ; j++) {
char t;
scanf(" %c",&t);
if (t == 'M') {
int x,a;
scanf("%d %d",&x,&a);
a--;
segtree.upd(a,x);
} else if (t == 'D') {
int y,b;
scanf("%d %d",&y,&b);
b--;
printf("%d\n",segtree.query(y,b));
}
}
}
int main() {
// freopen("in","r",stdin);
// freopen("out","w",stdout);
int T = 1;
//scanf("%d",&T);
while(T--) solve();
return 0;
}
Compilation message
deda.cpp: In function 'void solve()':
deda.cpp:116:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
116 | scanf("%d %d",&n,&q);
| ~~~~~^~~~~~~~~~~~~~~
deda.cpp:122:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
122 | scanf(" %c",&t);
| ~~~~~^~~~~~~~~~
deda.cpp:125:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
125 | scanf("%d %d",&x,&a);
| ~~~~~^~~~~~~~~~~~~~~
deda.cpp:130:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
130 | scanf("%d %d",&y,&b);
| ~~~~~^~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
304 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
3 ms |
372 KB |
Output is correct |
| 4 |
Correct |
145 ms |
7848 KB |
Output is correct |
| 5 |
Correct |
116 ms |
5800 KB |
Output is correct |
| 6 |
Correct |
121 ms |
6920 KB |
Output is correct |
| 7 |
Correct |
129 ms |
7884 KB |
Output is correct |
