#include <bits/stdc++.h>
using namespace std;
template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl
using ll = long long;
const int maxn = 1e6 + 5;
int n;
ll a[maxn];
ll b[maxn];
int main() {
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin>>n;
ll A = 0;
ll B = 0;
for (int i=0; i<n; i++) {
cin>>a[i]>>b[i];
A += a[i];
B += b[i];
}
assert(A==B);
ll res = 0;
int ptr = 0;
for (int i=0; i<n; i++) {
while (b[i]>0) {
while (a[ptr]==0) ++ptr;
ll cur = min(b[i],a[ptr]);
res += 1ll*abs(ptr-i)*cur;
a[ptr] -= cur;
b[i] -= cur;
}
}
cout<<res<<endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
492 KB |
Output is correct |
4 |
Correct |
9 ms |
1516 KB |
Output is correct |
5 |
Correct |
18 ms |
2540 KB |
Output is correct |
6 |
Correct |
52 ms |
7276 KB |
Output is correct |
7 |
Correct |
103 ms |
11244 KB |
Output is correct |
8 |
Correct |
84 ms |
11244 KB |
Output is correct |
9 |
Correct |
84 ms |
11244 KB |
Output is correct |
10 |
Correct |
65 ms |
10092 KB |
Output is correct |
11 |
Correct |
65 ms |
10092 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
492 KB |
Output is correct |
4 |
Correct |
9 ms |
1516 KB |
Output is correct |
5 |
Correct |
18 ms |
2540 KB |
Output is correct |
6 |
Correct |
52 ms |
7276 KB |
Output is correct |
7 |
Correct |
103 ms |
11244 KB |
Output is correct |
8 |
Correct |
84 ms |
11244 KB |
Output is correct |
9 |
Correct |
84 ms |
11244 KB |
Output is correct |
10 |
Correct |
65 ms |
10092 KB |
Output is correct |
11 |
Correct |
65 ms |
10092 KB |
Output is correct |
12 |
Runtime error |
29 ms |
6124 KB |
Execution killed with signal 6 (could be triggered by violating memory limits) |
13 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Runtime error |
2 ms |
492 KB |
Execution killed with signal 6 (could be triggered by violating memory limits) |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
492 KB |
Output is correct |
4 |
Runtime error |
2 ms |
492 KB |
Execution killed with signal 6 (could be triggered by violating memory limits) |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
492 KB |
Output is correct |
4 |
Runtime error |
2 ms |
492 KB |
Execution killed with signal 6 (could be triggered by violating memory limits) |
5 |
Halted |
0 ms |
0 KB |
- |