#include "bits/stdc++.h"
using namespace std;
typedef pair <int, int> pii;
int a[1000010], b[1000010];
long long pre[1000010], suf[1000010];
int main(int argc, char const *argv[])
{
ios_base :: sync_with_stdio (false);
cin.tie (0);
int n;
cin >> n;
for(int i = 1; i <= n; i++) {
cin >> a[i] >> b[i];
}
for(int i = 1; i <= n; i++) {
pre[i] = pre[i - 1] + a[i] - b[i];
}
for(int i = n; i >= 1; i--) {
suf[i] = suf[i + 1] + a[i] - b[i];
}
long long ans = 0;
for(int i = 1; i < n; i++) {
if(pre[i] < 0) {
ans -= pre[i];
}
if(suf[i + 1] < 0) {
ans -= suf[i + 1];
}
}
cout << ans << endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
3 ms |
504 KB |
Output is correct |
4 |
Correct |
11 ms |
1500 KB |
Output is correct |
5 |
Correct |
22 ms |
2680 KB |
Output is correct |
6 |
Correct |
63 ms |
6236 KB |
Output is correct |
7 |
Correct |
133 ms |
12132 KB |
Output is correct |
8 |
Correct |
100 ms |
12140 KB |
Output is correct |
9 |
Correct |
108 ms |
12080 KB |
Output is correct |
10 |
Correct |
83 ms |
12152 KB |
Output is correct |
11 |
Correct |
77 ms |
12024 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
3 ms |
504 KB |
Output is correct |
4 |
Correct |
11 ms |
1500 KB |
Output is correct |
5 |
Correct |
22 ms |
2680 KB |
Output is correct |
6 |
Correct |
63 ms |
6236 KB |
Output is correct |
7 |
Correct |
133 ms |
12132 KB |
Output is correct |
8 |
Correct |
100 ms |
12140 KB |
Output is correct |
9 |
Correct |
108 ms |
12080 KB |
Output is correct |
10 |
Correct |
83 ms |
12152 KB |
Output is correct |
11 |
Correct |
77 ms |
12024 KB |
Output is correct |
12 |
Incorrect |
33 ms |
3448 KB |
Output isn't correct |
13 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Incorrect |
2 ms |
248 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
3 ms |
504 KB |
Output is correct |
4 |
Incorrect |
2 ms |
248 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
3 ms |
504 KB |
Output is correct |
4 |
Incorrect |
2 ms |
248 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |