/**
* Author: Tenjin
* Created: 01.11.2022 13:38
* Why am I so stupid? :c
* Slishkom slab
**/
#include <bits/stdc++.h>
// #pragma GCC optimize("inline")
// #pragma GCC optimize("-fgcse,-fgcse-lm")
// #pragma GCC optimize("-ftree-pre,-ftree-vrp")
// #pragma GCC optimize("-ffast-math")
// #pragma GCC optimize("-fipa-sra")
// #pragma GCC optimize("-fpeephole2")
// #pragma GCC optimize("-fsched-spec")
// #pragma GCC optimize("Ofast,no-stack-protector")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
// #pragma GCC optimize("unroll-loops")
using namespace std;
#define ll long long
#define dl double long
#define ull unsigned long long
#define pr pair
#define vt vector
#define ff first
#define ss second
#define mp make_pair
#define sz(a) (int)a.size()
#define pb push_back
#define pf push_front
#define popB pop_back
#define popF pop_front
#define bit_count __builtin_popcount
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sp(x) fixed << setprecision(x)
template<typename T> T get_rand(T l, T r) {
random_device rd;
mt19937 gen(rd());
return uniform_int_distribution<T>(l, r)(gen);
}
template<typename T> T lcm(T a, T b) { return a * (b / __gcd(a, b)); }
template<class A> void read(vt<A>& v);
template<class A, size_t S> void read(array<A, S>& a);
template<class T> void read(T& x) { cin >> x; }
void read(double& d) { string t; read(t); d = stod(t); }
void read(long double& d) { string t; read(t); d = stold(t); }
template<class H, class... T> void read(H& h, T&... t) { read(h); read(t...); }
template<class A> void read(vt<A>& x) { for (auto& a : x) read(a); }
template<class A, size_t S> void read(array<A, S>& x) { for (auto& a : x) read(a); }
string to_string(char c) { return string(1, c); }
string to_string(bool b) { return b ? "true" : "false"; }
string to_string(const char* s) { return string(s); }
string to_string(string s) { return s; }
string to_string(vt<bool> v) { string res; for (int i = 0; i < sz(v); ++i) res += char('0' + v[i]); return res; }
template<size_t S> string to_string(bitset<S> b) { string res; for (int i = 0; i < S; ++i) res += char('0' + b[i]); return res; }
template<class T> string to_string(T v) { bool f = 1; string res; for (auto x : v) { if (!f) res += ' '; f = 0; res += to_string(x); } return res; }
template<class A> void write(A x) { cout << to_string(x); }
template<class H, class... T> void write(const H& h, const T&... t) { write(h); write(t...); }
void print() { write("\n"); }
template<class H, class... T> void print(const H& h, const T&... t) { write(h); if (sizeof...(t)) write(' '); print(t...); }
void freop(string s) {
freopen((s + ".in").c_str(), "r", stdin);
freopen((s + ".out").c_str(), "w", stdout);
}
const int MOD = 1e9 + 7;
const int N = 3e6 + 5;
const ll INF = 9e18;
const int M = 3e3 + 5;
const dl pi = acos(-1);
const dl eps = 1e-12;
const int sq = 700;
int dx[] = {-1, 0, 1, 0};
int dy[] = {0, -1, 0, 1};
/* ll vs int*/
int c[N], d[N];
bool used[N];
int g[N][20];
ll dp[N][20];
void solve() {
int n, m; read(n, m);
for(int i = 1; i <= n; ++i) {
read(d[i], dp[i][0]);
}
set<pr<int, int>> st;
for(int i = 1; i <= n; ++i) {
while(!st.empty() && (*st.begin()).ff < d[i]) {
// print(i, (*st.begin()).ss);
g[(*st.begin()).ss][0] = i;
st.erase(st.begin());
}
st.insert({d[i], i});
}
for(int j = 1; j < 20; ++j) {
for(int i = 0; i <= n; ++i) {
g[i][j] = g[g[i][j - 1]][j - 1];
dp[i][j] = dp[i][j - 1] + dp[g[i][j - 1]][j - 1];
//print(i, j, g[i][j]);
}
}
while(m--) {
int pos, v; read(pos, v);
for(int i = 19; i >= 0; --i) {
if(dp[pos][i] >= v) continue;
v -= dp[pos][i];
pos = g[pos][i];
}
print(pos);
}
}
int main() {
//freop("");
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int t = 1;
//read(t);
for (int i = 1; i <= t; ++i) {
//write("Case #" + to_string(i) + ": ");
solve();
}
return 0;
}
Compilation message
fountain.cpp: In function 'void freop(std::string)':
fountain.cpp:72:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
72 | freopen((s + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fountain.cpp:73:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
73 | freopen((s + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
468 KB |
Output is correct |
| 3 |
Correct |
1 ms |
468 KB |
Output is correct |
| 4 |
Correct |
1 ms |
596 KB |
Output is correct |
| 5 |
Correct |
2 ms |
596 KB |
Output is correct |
| 6 |
Correct |
2 ms |
596 KB |
Output is correct |
| 7 |
Correct |
2 ms |
596 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
214 ms |
23744 KB |
Output is correct |
| 2 |
Correct |
236 ms |
25052 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
468 KB |
Output is correct |
| 3 |
Correct |
1 ms |
468 KB |
Output is correct |
| 4 |
Correct |
1 ms |
596 KB |
Output is correct |
| 5 |
Correct |
2 ms |
596 KB |
Output is correct |
| 6 |
Correct |
2 ms |
596 KB |
Output is correct |
| 7 |
Correct |
2 ms |
596 KB |
Output is correct |
| 8 |
Correct |
214 ms |
23744 KB |
Output is correct |
| 9 |
Correct |
236 ms |
25052 KB |
Output is correct |
| 10 |
Correct |
1 ms |
520 KB |
Output is correct |
| 11 |
Correct |
85 ms |
15972 KB |
Output is correct |
| 12 |
Correct |
302 ms |
29512 KB |
Output is correct |
| 13 |
Correct |
215 ms |
29352 KB |
Output is correct |
| 14 |
Correct |
177 ms |
28324 KB |
Output is correct |
| 15 |
Correct |
153 ms |
33228 KB |
Output is correct |
