#include<bits/stdc++.h>
#define int long long
#define pb push_back
#define fast ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#define MOD 1000000007
#define INF 1e18
#define fi first
#define se second
#define endl "\n"
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define FORD(i,a,b) for(int i=a;i>=b;i--)
#define sz(a) ((int)(a).size())
#define pi 3.14159265359
#define TASKNAME "bulves"
template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; }
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; }
using namespace std;
typedef pair<int,int> ii;
typedef pair<int,ii> iii;
typedef vector<int> vi;
const int MAXN = 5e5 + 9;
int n;
int a[MAXN],b[MAXN],A,B;
namespace sub1 {
void solve(){
int ans = 0, bring = 0;
for(int i=1;i<=n;i++){
ans += abs(bring);
if (a[i] == b[i]) continue;
if (a[i] < b[i]) bring -= b[i] - a[i];
else bring += a[i] - b[i];
}
}
}
namespace sub5{
int dif[MAXN];
void solve(){
priority_queue<int> pq;
int ans = 0;
int d = 0;
for(int i=1;i<=n;i++){
dif[i] = dif[i-1] + a[i] - b[i];
// cout<<dif[i]<<' ';
}
// cout<<endl;
if (dif[1] < 0) ans -= dif[1], dif[1] = 0;
if (dif[1] > dif[n]) ans += dif[1] - dif[n], dif[1] = dif[n];
pq.push(dif[1]);
for(int i=2;i<n;i++){
if (dif[i] < 0) ans -= dif[i], dif[i] = 0;
if (dif[i] > dif[n]) ans += dif[i] - dif[n], dif[i] = dif[n];
if (dif[i] > pq.top()){
pq.push(dif[i]);
}
else{
pq.push(dif[i]);
pq.push(dif[i]);
ans += pq.top() - dif[i];
pq.pop();
}
}
cout<<ans<<endl;
}
}
main()
{
fast;
if (fopen(TASKNAME".inp","r")){
freopen(TASKNAME".inp","r",stdin);
freopen(TASKNAME".out","w",stdout);
}
cin>>n;
for(int i=1;i<=n;i++){
cin>>a[i]>>b[i];
A += a[i];
B += b[i];
}
assert(A >= B);
sub5::solve();
}
Compilation message
bulves.cpp: In function 'void sub5::solve()':
bulves.cpp:40:13: warning: unused variable 'd' [-Wunused-variable]
40 | int d = 0;
| ^
bulves.cpp: At global scope:
bulves.cpp:66:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
66 | main()
| ^~~~
bulves.cpp: In function 'int main()':
bulves.cpp:70:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
70 | freopen(TASKNAME".inp","r",stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
bulves.cpp:71:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
71 | freopen(TASKNAME".out","w",stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4564 KB |
Output is correct |
4 |
Correct |
7 ms |
9696 KB |
Output is correct |
5 |
Correct |
14 ms |
12488 KB |
Output is correct |
6 |
Correct |
42 ms |
15312 KB |
Output is correct |
7 |
Correct |
84 ms |
20744 KB |
Output is correct |
8 |
Correct |
80 ms |
20124 KB |
Output is correct |
9 |
Correct |
74 ms |
20256 KB |
Output is correct |
10 |
Correct |
65 ms |
18852 KB |
Output is correct |
11 |
Correct |
59 ms |
18956 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4564 KB |
Output is correct |
4 |
Correct |
7 ms |
9696 KB |
Output is correct |
5 |
Correct |
14 ms |
12488 KB |
Output is correct |
6 |
Correct |
42 ms |
15312 KB |
Output is correct |
7 |
Correct |
84 ms |
20744 KB |
Output is correct |
8 |
Correct |
80 ms |
20124 KB |
Output is correct |
9 |
Correct |
74 ms |
20256 KB |
Output is correct |
10 |
Correct |
65 ms |
18852 KB |
Output is correct |
11 |
Correct |
59 ms |
18956 KB |
Output is correct |
12 |
Correct |
24 ms |
13264 KB |
Output is correct |
13 |
Correct |
55 ms |
19144 KB |
Output is correct |
14 |
Correct |
85 ms |
22988 KB |
Output is correct |
15 |
Correct |
74 ms |
22984 KB |
Output is correct |
16 |
Correct |
72 ms |
22456 KB |
Output is correct |
17 |
Correct |
67 ms |
19260 KB |
Output is correct |
18 |
Correct |
1 ms |
4440 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4440 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
1 ms |
4444 KB |
Output is correct |
8 |
Correct |
2 ms |
4952 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4564 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
1 ms |
4444 KB |
Output is correct |
8 |
Correct |
2 ms |
4952 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
11 |
Correct |
1 ms |
4440 KB |
Output is correct |
12 |
Correct |
1 ms |
4444 KB |
Output is correct |
13 |
Correct |
1 ms |
4528 KB |
Output is correct |
14 |
Correct |
1 ms |
4440 KB |
Output is correct |
15 |
Correct |
2 ms |
4576 KB |
Output is correct |
16 |
Correct |
1 ms |
4440 KB |
Output is correct |
17 |
Correct |
1 ms |
4440 KB |
Output is correct |
18 |
Correct |
1 ms |
4444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4564 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
1 ms |
4444 KB |
Output is correct |
8 |
Correct |
2 ms |
4952 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
11 |
Correct |
7 ms |
9696 KB |
Output is correct |
12 |
Correct |
14 ms |
12488 KB |
Output is correct |
13 |
Correct |
42 ms |
15312 KB |
Output is correct |
14 |
Correct |
84 ms |
20744 KB |
Output is correct |
15 |
Correct |
80 ms |
20124 KB |
Output is correct |
16 |
Correct |
74 ms |
20256 KB |
Output is correct |
17 |
Correct |
65 ms |
18852 KB |
Output is correct |
18 |
Correct |
59 ms |
18956 KB |
Output is correct |
19 |
Correct |
24 ms |
13264 KB |
Output is correct |
20 |
Correct |
55 ms |
19144 KB |
Output is correct |
21 |
Correct |
85 ms |
22988 KB |
Output is correct |
22 |
Correct |
74 ms |
22984 KB |
Output is correct |
23 |
Correct |
72 ms |
22456 KB |
Output is correct |
24 |
Correct |
67 ms |
19260 KB |
Output is correct |
25 |
Correct |
1 ms |
4444 KB |
Output is correct |
26 |
Correct |
1 ms |
4528 KB |
Output is correct |
27 |
Correct |
1 ms |
4440 KB |
Output is correct |
28 |
Correct |
2 ms |
4576 KB |
Output is correct |
29 |
Correct |
1 ms |
4440 KB |
Output is correct |
30 |
Correct |
1 ms |
4440 KB |
Output is correct |
31 |
Correct |
1 ms |
4444 KB |
Output is correct |
32 |
Correct |
1 ms |
4440 KB |
Output is correct |
33 |
Correct |
27 ms |
13560 KB |
Output is correct |
34 |
Correct |
72 ms |
19480 KB |
Output is correct |
35 |
Correct |
115 ms |
24780 KB |
Output is correct |
36 |
Correct |
103 ms |
20680 KB |
Output is correct |
37 |
Correct |
79 ms |
22852 KB |
Output is correct |
38 |
Correct |
124 ms |
24868 KB |
Output is correct |
39 |
Correct |
69 ms |
20412 KB |
Output is correct |
40 |
Correct |
71 ms |
20368 KB |
Output is correct |
41 |
Correct |
64 ms |
19776 KB |
Output is correct |
42 |
Correct |
64 ms |
19256 KB |
Output is correct |
43 |
Correct |
69 ms |
20168 KB |
Output is correct |
44 |
Correct |
76 ms |
19148 KB |
Output is correct |
45 |
Correct |
102 ms |
23344 KB |
Output is correct |
46 |
Correct |
86 ms |
19292 KB |
Output is correct |
47 |
Correct |
69 ms |
19004 KB |
Output is correct |