#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define xn '\n'
#define pb push_back
#define oo LONG_MAX
using namespace std;
typedef pair<ll,ll> i2;
typedef pair<ll,i2> i3;
typedef pair<i2,ll> i4;
const int N = 1e5+5;
const int M = 1e3+5;
const ll mo = 1e9+7;
ll n,m;
ll a[N];
ll c[N];
ll d[N];
ll res;
stack <ll> s;
void sub3(){
ll l,r; cin >> l >> r;
for (long i=n; i>=1; i--) c[i] = max(c[i+1],a[i]);
for (long i=1; i<=n; i++){
ll j1 = 0;
while (!s.empty() && a[i] > a[s.top()]) s.pop();
if (!s.empty()) j1 = s.top();
res = max(res,a[j1]+a[i]+c[i+i-j1]);
s.push(i);
}
cout << res;
}
void sub1(){
while (m--){
ll l,r; cin >> l >> r;
ll ans = 0;
for (long i=l; i<=r-2 ; i++){
for (long j=i 1 ; j<=r-1 ; j++){
for (long k=j+(j - i); k<=r ; k++){
ans = max(ans , a[i] + a[j] + a[k]);
}
}
}
cout << ans << xn;
}
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin >> n;
for (long i=1; i<=n; i++) cin >> a[i];
cin >> m;
if (m == 1) sub3(); else sub1();
return 0;
}
Compilation message
jumps.cpp: In function 'void sub1()':
jumps.cpp:44:26: error: expected ';' before numeric constant
44 | for (long j=i 1 ; j<=r-1 ; j++){
| ^~
| ;
jumps.cpp:44:32: warning: for increment expression has no effect [-Wunused-value]
44 | for (long j=i 1 ; j<=r-1 ; j++){
| ~^~~~~
jumps.cpp:44:37: error: expected ')' before ';' token
44 | for (long j=i 1 ; j<=r-1 ; j++){
| ~ ^~
| )
jumps.cpp:44:13: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
44 | for (long j=i 1 ; j<=r-1 ; j++){
| ^~~
jumps.cpp:44:40: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
44 | for (long j=i 1 ; j<=r-1 ; j++){
| ^
jumps.cpp:44:40: error: 'j' was not declared in this scope
