| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 20505 |
2017-02-12T07:05:40 Z |
CYI(#67, choyi0521) |
초음속철도 (OJUZ11_rail) |
C++14 |
|
579 ms |
12836 KB |
#include<cstdio>
#include<algorithm>
#define mod 1000000007
using namespace std;
const int MXM = 2e5;
typedef long long ll;
int n, m, idx[MXM + 2], sz=1;
pair<int, int> p[MXM];
struct st {
int s, a = 1, b;
}tree[MXM * 4];
void f(int h, int a, int b) {
tree[h].a = (ll)tree[h].a*a%mod;
tree[h].b = ((ll)tree[h].b*a + b) % mod;
tree[h].s = ((ll)tree[h].s*a + b) % mod;
}
void update(int h, int l, int r, int gl, int gr, int a, int b) {
if (r < gl || gr < l) return;
if (gl <= l&&r <= gr) f(h, a, b);
else {
f(h * 2 + 1, tree[h].a, tree[h].b);
f(h * 2 + 2, tree[h].a, tree[h].b);
tree[h].a = 1;
tree[h].b = 0;
update(h * 2 + 1, l, (l + r) / 2, gl, gr, a, b);
update(h * 2 + 2, (l + r) / 2 + 1, r, gl, gr, a, b);
tree[h].s = ((ll)(tree[h * 2 + 1].s + tree[h * 2 + 2].s)*tree[h].a + tree[h].b) % mod;
}
}
int query(int h, int l, int r, int gl, int gr) {
if (r < gl || gr < l) return 0;
if (gl <= l&&r <= gr) return tree[h].s;
return (query(h * 2 + 1, l, (l + r) / 2, gl, gr) + query(h * 2 + 2, (l + r) / 2 + 1, r, gl, gr)) % mod;
}
int main() {
scanf("%d%d", &n, &m);
idx[sz++] = n;
for (int i = 0; i < m; i++) scanf("%d%d", &p[i].first, &p[i].second), idx[sz++] = p[i].second;
sort(p, p + m);
sort(idx, idx + sz);
sz = unique(idx, idx + sz) - idx;
update(0, 0, sz - 1, 0, 0, 1, 1);
for (int i = 0; i < m; i++) {
int l = lower_bound(idx, idx + sz, p[i].first - 1) - idx,
r = lower_bound(idx, idx + sz, p[i].second) - idx;
update(0, 0, sz - 1, r, r, 1, query(0, 0, sz - 1, l, r));
update(0, 0, sz - 1, r + 1, sz - 1, 2, 0);
}
printf("%d", query(0, 0, sz - 1, sz - 1, sz - 1));
return 0;
}
Compilation message
rail.cpp: In function 'int main()':
rail.cpp:36:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &n, &m);
^
rail.cpp:38:98: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for (int i = 0; i < m; i++) scanf("%d%d", &p[i].first, &p[i].second), idx[sz++] = p[i].second;
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 4 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 5 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 6 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 10 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 11 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 12 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 13 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 14 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 15 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 16 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 17 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 18 |
Correct |
3 ms |
12836 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 4 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 5 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 6 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 10 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 11 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 12 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 13 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 14 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 15 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 16 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 17 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 18 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 19 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 20 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 21 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 22 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 23 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 24 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 25 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 26 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 27 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 28 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 29 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 30 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 31 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 32 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 33 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 34 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 35 |
Correct |
0 ms |
12836 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 3 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 4 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 5 |
Correct |
249 ms |
12836 KB |
Output is correct |
| 6 |
Correct |
389 ms |
12836 KB |
Output is correct |
| 7 |
Correct |
379 ms |
12836 KB |
Output is correct |
| 8 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 9 |
Correct |
376 ms |
12836 KB |
Output is correct |
| 10 |
Correct |
383 ms |
12836 KB |
Output is correct |
| 11 |
Correct |
176 ms |
12836 KB |
Output is correct |
| 12 |
Correct |
389 ms |
12836 KB |
Output is correct |
| 13 |
Correct |
379 ms |
12836 KB |
Output is correct |
| 14 |
Correct |
69 ms |
12836 KB |
Output is correct |
| 15 |
Incorrect |
386 ms |
12836 KB |
Output isn't correct |
| 16 |
Correct |
73 ms |
12836 KB |
Output is correct |
| 17 |
Correct |
383 ms |
12836 KB |
Output is correct |
| 18 |
Correct |
409 ms |
12836 KB |
Output is correct |
| 19 |
Correct |
379 ms |
12836 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 4 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 5 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 6 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 10 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 11 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 12 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 13 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 14 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 15 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 16 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 17 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 18 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 19 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 20 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 21 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 22 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 23 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 24 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 25 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 26 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 27 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 28 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 29 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 30 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 31 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 32 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 33 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 34 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 35 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 36 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 37 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 38 |
Incorrect |
9 ms |
12836 KB |
Output isn't correct |
| 39 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 40 |
Correct |
9 ms |
12836 KB |
Output is correct |
| 41 |
Correct |
9 ms |
12836 KB |
Output is correct |
| 42 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 43 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 44 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 45 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 46 |
Correct |
6 ms |
12836 KB |
Output is correct |
| 47 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 48 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 49 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 50 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 51 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 52 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 53 |
Correct |
13 ms |
12836 KB |
Output is correct |
| 54 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 55 |
Correct |
9 ms |
12836 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 4 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 5 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 6 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 10 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 11 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 12 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 13 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 14 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 15 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 16 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 17 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 18 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 19 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 20 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 21 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 22 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 23 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 24 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 25 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 26 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 27 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 28 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 29 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 30 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 31 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 32 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 33 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 34 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 35 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 36 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 37 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 38 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 39 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 40 |
Correct |
249 ms |
12836 KB |
Output is correct |
| 41 |
Correct |
389 ms |
12836 KB |
Output is correct |
| 42 |
Correct |
379 ms |
12836 KB |
Output is correct |
| 43 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 44 |
Correct |
376 ms |
12836 KB |
Output is correct |
| 45 |
Correct |
383 ms |
12836 KB |
Output is correct |
| 46 |
Correct |
176 ms |
12836 KB |
Output is correct |
| 47 |
Correct |
389 ms |
12836 KB |
Output is correct |
| 48 |
Correct |
379 ms |
12836 KB |
Output is correct |
| 49 |
Correct |
69 ms |
12836 KB |
Output is correct |
| 50 |
Incorrect |
386 ms |
12836 KB |
Output isn't correct |
| 51 |
Correct |
73 ms |
12836 KB |
Output is correct |
| 52 |
Correct |
383 ms |
12836 KB |
Output is correct |
| 53 |
Correct |
409 ms |
12836 KB |
Output is correct |
| 54 |
Correct |
379 ms |
12836 KB |
Output is correct |
| 55 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 56 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 57 |
Incorrect |
9 ms |
12836 KB |
Output isn't correct |
| 58 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 59 |
Correct |
9 ms |
12836 KB |
Output is correct |
| 60 |
Correct |
9 ms |
12836 KB |
Output is correct |
| 61 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 62 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 63 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 64 |
Correct |
0 ms |
12836 KB |
Output is correct |
| 65 |
Correct |
6 ms |
12836 KB |
Output is correct |
| 66 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 67 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 68 |
Incorrect |
0 ms |
12836 KB |
Output isn't correct |
| 69 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 70 |
Correct |
3 ms |
12836 KB |
Output is correct |
| 71 |
Incorrect |
3 ms |
12836 KB |
Output isn't correct |
| 72 |
Correct |
13 ms |
12836 KB |
Output is correct |
| 73 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 74 |
Correct |
9 ms |
12836 KB |
Output is correct |
| 75 |
Incorrect |
536 ms |
12836 KB |
Output isn't correct |
| 76 |
Incorrect |
346 ms |
12836 KB |
Output isn't correct |
| 77 |
Incorrect |
276 ms |
12836 KB |
Output isn't correct |
| 78 |
Incorrect |
66 ms |
12836 KB |
Output isn't correct |
| 79 |
Correct |
409 ms |
12836 KB |
Output is correct |
| 80 |
Incorrect |
533 ms |
12836 KB |
Output isn't correct |
| 81 |
Incorrect |
6 ms |
12836 KB |
Output isn't correct |
| 82 |
Incorrect |
499 ms |
12836 KB |
Output isn't correct |
| 83 |
Correct |
59 ms |
12836 KB |
Output is correct |
| 84 |
Incorrect |
429 ms |
12836 KB |
Output isn't correct |
| 85 |
Incorrect |
443 ms |
12836 KB |
Output isn't correct |
| 86 |
Incorrect |
443 ms |
12836 KB |
Output isn't correct |
| 87 |
Correct |
139 ms |
12836 KB |
Output is correct |
| 88 |
Incorrect |
143 ms |
12836 KB |
Output isn't correct |
| 89 |
Incorrect |
529 ms |
12836 KB |
Output isn't correct |
| 90 |
Incorrect |
579 ms |
12836 KB |
Output isn't correct |
| 91 |
Incorrect |
553 ms |
12836 KB |
Output isn't correct |
| 92 |
Correct |
506 ms |
12836 KB |
Output is correct |
| 93 |
Incorrect |
479 ms |
12836 KB |
Output isn't correct |
| 94 |
Incorrect |
563 ms |
12836 KB |
Output isn't correct |
| 95 |
Incorrect |
553 ms |
12836 KB |
Output isn't correct |
