# include <bits/stdc++.h>
# define pb push_back
# define ff first
# define ss second
# define nl "\n"
# define sz(x) ((int)(x).size())
# define deb(x) cerr << #x << " = " << x << endl;
# define pll pair <ll, ll>
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
const ll maxn = 1e5 + 25;
const ll inf = 2e9 + 0;
const ll mod = 1e9 + 7;
const ll dx[] = {-1, 1, 0, 0};
const ll dy[] = {0, 0, -1, 1};
using namespace std;
ll n, q, up[maxn][22];
pll p[maxn];
ll sum[maxn][22];
void ma1n (/* SABR */)
{
cin >> n >> q;
for (ll i = 1; i <= n; ++i)
{
cin >> p[i].ff >> p[i].ss;
sum[i][0] = p[i].ss;
}
p[n + 1] = {inf, inf};
set <pll> st;
for (ll i = 1; i <= n; ++i)
{
while (!st.empty() && (st.begin() -> ff) < p[i].ff)
{
up[(st.begin() -> ss)][0] = i;
st.erase(st.begin());
}
st.insert({p[i].ff, i});
}
for (ll i = 1; i <= n; ++i)
{
if (up[i][0] == 0) up[i][0] = n + 1;
}
for (ll j = 0; j <= 20; ++j)
{
sum[n + 1][j] = inf;
}
for (ll j = 1; j <= 20; ++j)
{
for (ll i = 1; i <= n; ++i)
{
up[i][j] = up[up[i][j - 1]][j - 1];
sum[i][j] = sum[i][j - 1] + sum[up[i][j - 1]][j - 1];
}
}
while (q--)
{
ll id, v;
cin >> id >> v;
for (ll j = 20; j >= 0; --j)
{
if (sum[id][j] < v)
{
id = up[id][j];
v -= sum[id][j];
}
}
if (id == n + 1) id = 0;
cout << id << nl;
}
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
// freopen("file.in", "r", stdin);
// freopen("file.out", "w", stdout);
int ttt = 1;
// cin >> ttt;
for (int test = 1; test <= ttt; ++test)
{
// cout << "Case " << test << ":" << ' ';
ma1n();
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
234 ms |
36780 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
