Submission #1354618
Source Code Expand
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int n, a[200010];
const int sz = 262144;
struct Seg{
int dat[2 * sz];
void ini(){
for(int i = sz; i < sz + n; i++) dat[i] = i - sz + 1;
for(int i = sz - 1; i >= 1; i--){
if(a[dat[2 * i]] < a[dat[2 * i + 1]]) dat[i] = dat[2 * i];
else dat[i] = dat[2 * i + 1];
}
}
int get(int s, int e){
int ret = 0;
for(s += sz - 1, e += sz - 1; s <= e; s /= 2, e /= 2){
if(s % 2 == 1){
if(a[ret] > a[dat[s]]) ret = dat[s];
s++;
}
if(e % 2 == 0){
if(a[ret] > a[dat[e]]) ret = dat[e];
e--;
}
}
return ret;
}
} S;
ll f(int s, int e){
if(s > e) return 0;
int mi = S.get(s, e);
return 1LL * (mi - s + 1) * (e + 1 - mi) * a[mi] + f(s, mi - 1) + f(mi + 1, e);
}
int main(){
scanf("%d", &n);
for(int i = 1; i <= n; i++) scanf("%d", a + i);
a[0] = n + 1;
S.ini();
printf("%lld\n", f(1, n));
}
Submission Info
Submission Time
2017-06-15 09:27:39+0900
Task
B - Minimum Sum
User
kdh9949
Language
C++14 (GCC 5.4.1)
Score
400
Code Size
944 Byte
Status
AC
Exec Time
45 ms
Memory
18432 KB
Compile Error
./Main.cpp: In function ‘int main()’:
./Main.cpp:40:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &n);
^
./Main.cpp:41:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
for(int i = 1; i <= n; i++) scanf("%d", a + i);
^
Judge Result
Set Name
Sample
All
Score / Max Score
0 / 0
400 / 400
Status
Set Name
Test Cases
Sample
example0, example1, example2
All
corner0, corner1, corner2, corner3, example0, example1, example2, maxrand0, maxrand1, maxrand2, rand0, rand1, rand2
Case Name
Status
Exec Time
Memory
corner0
AC
38 ms
2816 KB
corner1
AC
43 ms
18432 KB
corner2
AC
2 ms
1280 KB
corner3
AC
45 ms
10624 KB
example0
AC
2 ms
1280 KB
example1
AC
2 ms
1280 KB
example2
AC
2 ms
1280 KB
maxrand0
AC
29 ms
2816 KB
maxrand1
AC
29 ms
2816 KB
maxrand2
AC
29 ms
2816 KB
rand0
AC
2 ms
1280 KB
rand1
AC
2 ms
1280 KB
rand2
AC
2 ms
1280 KB