| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 914641 |
2024-01-22T12:50:48 Z |
mychecksedad |
Fire (JOI20_ho_t5) |
C++17 |
|
458 ms |
163104 KB |
/* Author : Mychecksdead */
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
const int N = 2e6+100, M = 1e5+10, K = 52, MX = 30;
int n, q, L[N], R[N];
ll a[N], ans[N], T[N], lazy[N], F[N], fazy[N];
vector<array<int, 3>> Q[N];
vector<array<ll, 3>> UPD[N];
void build(int l, int r, int k){
if(l == r){
F[k] = T[k] = lazy[k] = fazy[k] = 0;
return;
}
int m = l+r>>1;
build(l, m, k<<1);
build(m+1, r, k<<1|1);
T[k] = F[k] = lazy[k] = fazy[k] = 0;
}
void push(int k, int l, int r, int m){
T[k<<1] += lazy[k]*(ll)(m-l+1);
T[k<<1|1] += lazy[k]*(ll)(r-m);
lazy[k<<1] += lazy[k];
lazy[k<<1|1] += lazy[k];
lazy[k] = 0;
}
void push2(int k, int l, int r, int m){
F[k<<1] += fazy[k]*(ll)(m-l+1);
F[k<<1|1] += fazy[k]*(ll)(r-m);
fazy[k<<1] += fazy[k];
fazy[k<<1|1] += fazy[k];
fazy[k] = 0;
}
void upd(int l, int r, int ql, int qr, int k, ll val){
if(ql > r || l > qr) return;
if(ql <= l && r <= qr){
T[k] += (ll)(r-l+1)*val;
lazy[k] += val;
return;
}
int m = l+r>>1;
push(k, l, r, m);
upd(l, m, ql, qr, k<<1, val);
upd(m+1, r, ql, qr, k<<1|1, val);
T[k] = T[k<<1] + T[k<<1|1];
}
void upd2(int l, int r, int ql, int qr, int k, ll val){
if(ql > r || l > qr) return;
if(ql <= l && r <= qr){
F[k] += (ll)(r-l+1)*val;
fazy[k] += val;
return;
}
int m = l+r>>1;
push2(k, l, r, m);
upd2(l, m, ql, qr, k<<1, val);
upd2(m+1, r, ql, qr, k<<1|1, val);
F[k] = F[k<<1] + F[k<<1|1];
}
ll get(int l, int r, int ql, int qr, int k){
if(ql > r || l > qr) return 0;
if(ql <= l && r <= qr) return T[k];
int m = l+r>>1;
push(k, l, r, m);
return get(l, m, ql, qr, k<<1) + get(m+1, r, ql, qr, k<<1|1);
}
ll get2(int l, int r, int ql, int qr, int k){
if(ql > r || l > qr) return 0;
if(ql <= l && r <= qr) return F[k];
int m = l+r>>1;
push2(k, l, r, m);
return get2(l, m, ql, qr, k<<1) + get2(m+1, r, ql, qr, k<<1|1);
}
void add_triangle(int posd, int posv, ll val){
if(posd >= 1 && posd <= 2*n) upd(1, 2*n, posd, 2*n, 1, val);
if(posv < n)
upd2(1, n, posv + 1, n, 1, -val);
}
void solve(){
cin >> n >> q;
for(int i = 1; i <= n; ++i) cin >> a[i];
vector<int> qq;
qq.pb(n);
L[n] = n + 1;
for(int i = n-1; i >= 1; --i){
while(!qq.empty() && a[qq.back()] < a[i]) qq.pop_back();
if(qq.empty()) L[i] = n + 1;
else L[i] = qq.back();
qq.pb(i);
}
qq.clear();
qq.pb(1);
R[1] = 0;
for(int i = 2; i <= n; ++i){
while(!qq.empty() && a[qq.back()] < a[i]) qq.pop_back();
if(qq.empty()) R[i] = 0;
else R[i] = qq.back();
qq.pb(i);
}
for(int i = 0; i < q; ++i){
int t, l, r; cin >> t >> l >> r;
Q[t].pb({l, r, i});
ans[i] = 0;
}
build(1, 2*n, 1);
for(int i = 1; i <= n; ++i){
// cout << L[i] << ' ' << R[i] << '\n';
if(R[i] > 0){
int t = L[i]-1-i+i-R[i]-1, x = L[i] - 1;
UPD[t].pb({n-t+x, x, a[i]});
if(i-R[i]-2 >= 1)
UPD[i-R[i]-2].pb({n-(i-R[i]-2)+i-1, i-1, -a[i]});
if(L[i]-i-2 >= 1 && L[i] <= n)
UPD[L[i] - i - 2].pb({n-(L[i] - i - 2)+x, x, -a[i]});
}else{
upd2(1, n, i, L[i]-1, 1, a[i]);
if(i < n && L[i]-i-2 >= 1)
UPD[L[i]-i-2].pb({n-(L[i]-i-2)+L[i]-1, L[i]-1, -a[i]});
// cout << i+n+1 << '\n';
}
}
for(int i = n; i >= 1; --i){
for(auto k: UPD[i]){
add_triangle(k[0], k[1], k[2]);
// cout << k[0] << ' ' << k[1] << ' ' << k[2] <<"triangle\n";
}
// cout << i << "\n";
for(auto x: Q[i]){
// cout << qq[0] << ' ' << qq[1] << ' ' << n-i+qq[0] << ' ' << n-i+qq[1] << '\n';
ans[x[2]] = get(1, 2*n, n-i+x[0], n-i+x[1], 1) + get2(1, n, x[0], x[1], 1);
}
}
for(int i = 0 ; i < q; ++i) cout << ans[i] << '\n';
}
int main(){
cin.tie(0); ios::sync_with_stdio(0);
int tt = 1, aa;
// freopen("in.txt", "r", stdin);
// freopen("out.txt", "w", stdout);
while(tt--){
solve();
}
cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
return 0;
}
Compilation message
ho_t5.cpp: In function 'void build(int, int, int)':
ho_t5.cpp:23:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
23 | int m = l+r>>1;
| ~^~
ho_t5.cpp: In function 'void upd(int, int, int, int, int, long long int)':
ho_t5.cpp:51:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
51 | int m = l+r>>1;
| ~^~
ho_t5.cpp: In function 'void upd2(int, int, int, int, int, long long int)':
ho_t5.cpp:64:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
64 | int m = l+r>>1;
| ~^~
ho_t5.cpp: In function 'long long int get(int, int, int, int, int)':
ho_t5.cpp:74:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
74 | int m = l+r>>1;
| ~^~
ho_t5.cpp: In function 'long long int get2(int, int, int, int, int)':
ho_t5.cpp:81:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
81 | int m = l+r>>1;
| ~^~
ho_t5.cpp: In function 'int main()':
ho_t5.cpp:158:15: warning: unused variable 'aa' [-Wunused-variable]
158 | int tt = 1, aa;
| ^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
32 ms |
109304 KB |
Output is correct |
| 2 |
Correct |
34 ms |
109404 KB |
Output is correct |
| 3 |
Incorrect |
31 ms |
109400 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
32 ms |
109304 KB |
Output is correct |
| 2 |
Correct |
430 ms |
158940 KB |
Output is correct |
| 3 |
Correct |
453 ms |
158648 KB |
Output is correct |
| 4 |
Correct |
429 ms |
158832 KB |
Output is correct |
| 5 |
Correct |
429 ms |
163104 KB |
Output is correct |
| 6 |
Correct |
388 ms |
158908 KB |
Output is correct |
| 7 |
Correct |
458 ms |
158908 KB |
Output is correct |
| 8 |
Correct |
415 ms |
162820 KB |
Output is correct |
| 9 |
Incorrect |
426 ms |
161948 KB |
Output isn't correct |
| 10 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
32 ms |
109304 KB |
Output is correct |
| 2 |
Incorrect |
399 ms |
159292 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
408 ms |
156488 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
32 ms |
109304 KB |
Output is correct |
| 2 |
Correct |
34 ms |
109404 KB |
Output is correct |
| 3 |
Incorrect |
31 ms |
109400 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
