#include<bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define int long long
#define sz(c) (int)(c).size()
#define all(c) (c).begin(), (c).end()
#define rall(c) (c).rbegin(), (c).rend()
using namespace std;
const int N = 30030;
int TN = 1;
int n, m, k;
int cnt, ans;
int us[N][55];
bool flag = false;
vector<int> verr[N];
void rec(int a, int b, int cnt, int pos) {
if (a > b) {
if (cnt >= m) {
flag = true; return;
} else {
return;
}
}
if (cnt >= m) {
flag = true; return;
}
for (int i: verr[a]) {
if (!us[pos][i]) {
us[pos][i] = 1;
rec(a + 1, b, cnt + 1, pos);
us[pos][i] = 0;
}
}
rec(a + 1, b, cnt, pos);
}
void solve() {
scanf("%lld %lld %lld", &n, &m, &k);
for (int i = 1; i <= k; i++) {
int x, y;
scanf("%lld %lld", &x, &y); verr[x].push_back(y);
}
int pos = 0;
for (int i = 1; i <= n; i++) {
int l = i, r = n;
while (l + 1 < r) {
int mid = (l + r) >> 1;
if (mid - i + 1 < m) {
l = mid + 1; continue;
}
flag = false; cnt = 0; pos++;
rec(i, mid, cnt, pos);
if (flag) {
r = mid;
} else {
l = mid + 1;
}
}
flag = false; cnt = 0; pos++;
rec(i, r, cnt, pos);
if (!flag) {
continue;
}
flag = false; cnt = 0; pos++;
rec(i, l, cnt, pos);
if (flag) {
ans += (n - l + 1);
} else {
ans += (n - r + 1);
}
// cout << i << " " << l << " " << r << "\n";
/*for (int r = l + m - 1; r <= n; r++) {
flag = false; cnt = 0;
rec(l, r, cnt, ans + 1); ans += flag;
if (flag) {
ans += (n - r); break;
}
}*/
}
printf("%lld\n", ans);
return;
}
signed main() {
// in; out; // cin >> TN;
while (TN--) { solve(); }
return 0;
}
Compilation message
marriage.cpp: In function 'void solve()':
marriage.cpp:45:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld %lld %lld", &n, &m, &k);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
marriage.cpp:48:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld %lld", &x, &y); verr[x].push_back(y);
~~~~~^~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 2 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 3 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 4 |
Correct |
2 ms |
1020 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 7 |
Correct |
1258 ms |
1144 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 9 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 10 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 11 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 12 |
Correct |
2 ms |
1020 KB |
Output is correct |
| 13 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 14 |
Correct |
229 ms |
1016 KB |
Output is correct |
| 15 |
Correct |
32 ms |
1084 KB |
Output is correct |
| 16 |
Correct |
4 ms |
1016 KB |
Output is correct |
| 17 |
Correct |
32 ms |
1016 KB |
Output is correct |
| 18 |
Correct |
7 ms |
1016 KB |
Output is correct |
| 19 |
Execution timed out |
1577 ms |
1016 KB |
Time limit exceeded |
| 20 |
Execution timed out |
1572 ms |
1016 KB |
Time limit exceeded |
| 21 |
Execution timed out |
1577 ms |
1016 KB |
Time limit exceeded |
| 22 |
Execution timed out |
1572 ms |
1016 KB |
Time limit exceeded |
| 23 |
Execution timed out |
1559 ms |
1016 KB |
Time limit exceeded |
| 24 |
Execution timed out |
1566 ms |
1016 KB |
Time limit exceeded |
| 25 |
Execution timed out |
1571 ms |
1272 KB |
Time limit exceeded |
| 26 |
Execution timed out |
1579 ms |
1016 KB |
Time limit exceeded |
| 27 |
Execution timed out |
1558 ms |
1016 KB |
Time limit exceeded |
| 28 |
Execution timed out |
1575 ms |
1016 KB |
Time limit exceeded |
| 29 |
Execution timed out |
1567 ms |
1144 KB |
Time limit exceeded |
| 30 |
Execution timed out |
1584 ms |
1144 KB |
Time limit exceeded |
| 31 |
Execution timed out |
1577 ms |
1784 KB |
Time limit exceeded |
| 32 |
Execution timed out |
1580 ms |
1244 KB |
Time limit exceeded |
| 33 |
Execution timed out |
1573 ms |
1016 KB |
Time limit exceeded |
| 34 |
Execution timed out |
1571 ms |
1016 KB |
Time limit exceeded |
| 35 |
Execution timed out |
1571 ms |
2168 KB |
Time limit exceeded |
| 36 |
Execution timed out |
1566 ms |
2168 KB |
Time limit exceeded |
| 37 |
Execution timed out |
1572 ms |
1912 KB |
Time limit exceeded |
| 38 |
Execution timed out |
1577 ms |
2684 KB |
Time limit exceeded |
| 39 |
Execution timed out |
1554 ms |
1272 KB |
Time limit exceeded |
| 40 |
Execution timed out |
1583 ms |
1528 KB |
Time limit exceeded |
| 41 |
Execution timed out |
1581 ms |
1660 KB |
Time limit exceeded |
| 42 |
Execution timed out |
1562 ms |
1656 KB |
Time limit exceeded |
| 43 |
Execution timed out |
1568 ms |
1784 KB |
Time limit exceeded |
| 44 |
Execution timed out |
1567 ms |
2296 KB |
Time limit exceeded |
| 45 |
Execution timed out |
1551 ms |
1912 KB |
Time limit exceeded |
| 46 |
Execution timed out |
1537 ms |
2808 KB |
Time limit exceeded |
| 47 |
Execution timed out |
1565 ms |
2552 KB |
Time limit exceeded |
| 48 |
Execution timed out |
1566 ms |
2680 KB |
Time limit exceeded |
| 49 |
Execution timed out |
1570 ms |
2936 KB |
Time limit exceeded |
| 50 |
Execution timed out |
1576 ms |
1144 KB |
Time limit exceeded |
