#include <bits/stdc++.h>
using namespace std;
const int N = 1e6 + 1,MOD = 1e9 + 7;
typedef long long ll;
#define int long long
int n,m;
ll ans =0;
bool ok = true;
vector<int> g[N];
void solve(){
vector<pair<int,int>> _;
for(int i = 1;i <= m;i++){
int cur = 1,sum = 0;
for(auto j:g[i]){
sum += j;
}
if(sum == n){
cout << n;
return;
}
vector<pair<int,int>> v,all;
for(auto j:g[i]){
if(n - sum >= cur){
v.push_back({cur,n - sum});
}
cur += j;
sum -= j;
}
if(n - sum >= cur){
v.push_back({cur,n - sum});
}
int k = v.size();
for(int f = 0;f < k;f++){
int mx = v[f].second;
for(int j = f + 1;j <= k;j++){
if(j == k || v[j].first > mx){
all.push_back({v[f].first,mx});
f = j - 1;
break;
}else{
mx = max(mx,v[j].second);
}
}
}
sort(all.begin(),all.end());
if(all.empty()) continue;
if(all[0].first != 1){
_.push_back({1,all[0].first - 1});
}
if(all.back().second != n){
_.push_back({all.back().second + 1,n});
}
for(int j = 1;j < all.size();j++){
int l = all[j - 1].second + 1,r = all[j].first - 1;
if(l <= r){
_.push_back({l,r});
}
}
}
vector<pair<int,int>> v = _;
sort(v.begin(),v.end());
int k = v.size();
for(int i = 0;i < k;i++){
int mx = v[i].second;
for(int j = i + 1;j <= k;j++){
if(j == k || v[j].first > mx){
ans += (mx - v[i].first + 1);
i = j - 1;
break;
}else{
mx = max(mx,v[j].second);
}
}
}
cout << ans << '\n';
}
void test(){
cin >> n >> m;
for(int i = 1;i <= m;i++){
int k;
cin >> k;
if(k > 1){
ok = false;
}
while(k--){
int s;
cin >> s;
g[i].push_back(s);
}
}
solve();
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
int t = 1;
//cin >> t;
while(t--){
test();
}
}
Compilation message
lasers.cpp: In function 'void solve()':
lasers.cpp:55:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
55 | for(int j = 1;j < all.size();j++){
| ~~^~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
23900 KB |
Output is correct |
2 |
Correct |
5 ms |
23900 KB |
Output is correct |
3 |
Correct |
5 ms |
23900 KB |
Output is correct |
4 |
Correct |
5 ms |
23900 KB |
Output is correct |
5 |
Correct |
5 ms |
23900 KB |
Output is correct |
6 |
Correct |
5 ms |
23900 KB |
Output is correct |
7 |
Correct |
5 ms |
23900 KB |
Output is correct |
8 |
Correct |
5 ms |
23952 KB |
Output is correct |
9 |
Correct |
5 ms |
23900 KB |
Output is correct |
10 |
Correct |
5 ms |
23900 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
23900 KB |
Output is correct |
2 |
Correct |
5 ms |
23900 KB |
Output is correct |
3 |
Correct |
5 ms |
23900 KB |
Output is correct |
4 |
Correct |
5 ms |
23900 KB |
Output is correct |
5 |
Correct |
5 ms |
23900 KB |
Output is correct |
6 |
Correct |
5 ms |
23900 KB |
Output is correct |
7 |
Correct |
5 ms |
23900 KB |
Output is correct |
8 |
Correct |
5 ms |
23952 KB |
Output is correct |
9 |
Correct |
5 ms |
23900 KB |
Output is correct |
10 |
Correct |
5 ms |
23900 KB |
Output is correct |
11 |
Correct |
5 ms |
23896 KB |
Output is correct |
12 |
Correct |
87 ms |
44944 KB |
Output is correct |
13 |
Correct |
5 ms |
23896 KB |
Output is correct |
14 |
Correct |
5 ms |
23900 KB |
Output is correct |
15 |
Correct |
5 ms |
23900 KB |
Output is correct |
16 |
Correct |
6 ms |
23908 KB |
Output is correct |
17 |
Correct |
154 ms |
52116 KB |
Output is correct |
18 |
Correct |
5 ms |
23940 KB |
Output is correct |
19 |
Correct |
8 ms |
23944 KB |
Output is correct |
20 |
Correct |
5 ms |
23896 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
47 ms |
38976 KB |
Output is correct |
2 |
Correct |
11 ms |
26772 KB |
Output is correct |
3 |
Correct |
13 ms |
26548 KB |
Output is correct |
4 |
Correct |
57 ms |
39932 KB |
Output is correct |
5 |
Correct |
24 ms |
33484 KB |
Output is correct |
6 |
Correct |
35 ms |
40400 KB |
Output is correct |
7 |
Correct |
6 ms |
24236 KB |
Output is correct |
8 |
Correct |
42 ms |
45264 KB |
Output is correct |
9 |
Correct |
28 ms |
33768 KB |
Output is correct |
10 |
Correct |
51 ms |
42792 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
23900 KB |
Output is correct |
2 |
Correct |
6 ms |
23900 KB |
Output is correct |
3 |
Correct |
5 ms |
23964 KB |
Output is correct |
4 |
Correct |
5 ms |
23900 KB |
Output is correct |
5 |
Correct |
5 ms |
23900 KB |
Output is correct |
6 |
Correct |
5 ms |
24152 KB |
Output is correct |
7 |
Correct |
6 ms |
23936 KB |
Output is correct |
8 |
Correct |
6 ms |
23900 KB |
Output is correct |
9 |
Correct |
6 ms |
23948 KB |
Output is correct |
10 |
Correct |
7 ms |
23900 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
47 ms |
38976 KB |
Output is correct |
2 |
Correct |
11 ms |
26772 KB |
Output is correct |
3 |
Correct |
13 ms |
26548 KB |
Output is correct |
4 |
Correct |
57 ms |
39932 KB |
Output is correct |
5 |
Correct |
24 ms |
33484 KB |
Output is correct |
6 |
Correct |
35 ms |
40400 KB |
Output is correct |
7 |
Correct |
6 ms |
24236 KB |
Output is correct |
8 |
Correct |
42 ms |
45264 KB |
Output is correct |
9 |
Correct |
28 ms |
33768 KB |
Output is correct |
10 |
Correct |
51 ms |
42792 KB |
Output is correct |
11 |
Correct |
5 ms |
23900 KB |
Output is correct |
12 |
Correct |
6 ms |
23900 KB |
Output is correct |
13 |
Correct |
5 ms |
23964 KB |
Output is correct |
14 |
Correct |
5 ms |
23900 KB |
Output is correct |
15 |
Correct |
5 ms |
23900 KB |
Output is correct |
16 |
Correct |
5 ms |
24152 KB |
Output is correct |
17 |
Correct |
6 ms |
23936 KB |
Output is correct |
18 |
Correct |
6 ms |
23900 KB |
Output is correct |
19 |
Correct |
6 ms |
23948 KB |
Output is correct |
20 |
Correct |
7 ms |
23900 KB |
Output is correct |
21 |
Correct |
162 ms |
51636 KB |
Output is correct |
22 |
Correct |
20 ms |
27140 KB |
Output is correct |
23 |
Correct |
19 ms |
27280 KB |
Output is correct |
24 |
Correct |
49 ms |
37904 KB |
Output is correct |
25 |
Correct |
158 ms |
51588 KB |
Output is correct |
26 |
Correct |
39 ms |
33700 KB |
Output is correct |
27 |
Correct |
20 ms |
27440 KB |
Output is correct |
28 |
Correct |
160 ms |
51596 KB |
Output is correct |
29 |
Correct |
149 ms |
51624 KB |
Output is correct |
30 |
Correct |
40 ms |
32568 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
23900 KB |
Output is correct |
2 |
Correct |
5 ms |
23900 KB |
Output is correct |
3 |
Correct |
5 ms |
23900 KB |
Output is correct |
4 |
Correct |
5 ms |
23900 KB |
Output is correct |
5 |
Correct |
5 ms |
23900 KB |
Output is correct |
6 |
Correct |
5 ms |
23900 KB |
Output is correct |
7 |
Correct |
5 ms |
23900 KB |
Output is correct |
8 |
Correct |
5 ms |
23952 KB |
Output is correct |
9 |
Correct |
5 ms |
23900 KB |
Output is correct |
10 |
Correct |
5 ms |
23900 KB |
Output is correct |
11 |
Correct |
5 ms |
23896 KB |
Output is correct |
12 |
Correct |
87 ms |
44944 KB |
Output is correct |
13 |
Correct |
5 ms |
23896 KB |
Output is correct |
14 |
Correct |
5 ms |
23900 KB |
Output is correct |
15 |
Correct |
5 ms |
23900 KB |
Output is correct |
16 |
Correct |
6 ms |
23908 KB |
Output is correct |
17 |
Correct |
154 ms |
52116 KB |
Output is correct |
18 |
Correct |
5 ms |
23940 KB |
Output is correct |
19 |
Correct |
8 ms |
23944 KB |
Output is correct |
20 |
Correct |
5 ms |
23896 KB |
Output is correct |
21 |
Correct |
47 ms |
38976 KB |
Output is correct |
22 |
Correct |
11 ms |
26772 KB |
Output is correct |
23 |
Correct |
13 ms |
26548 KB |
Output is correct |
24 |
Correct |
57 ms |
39932 KB |
Output is correct |
25 |
Correct |
24 ms |
33484 KB |
Output is correct |
26 |
Correct |
35 ms |
40400 KB |
Output is correct |
27 |
Correct |
6 ms |
24236 KB |
Output is correct |
28 |
Correct |
42 ms |
45264 KB |
Output is correct |
29 |
Correct |
28 ms |
33768 KB |
Output is correct |
30 |
Correct |
51 ms |
42792 KB |
Output is correct |
31 |
Correct |
5 ms |
23900 KB |
Output is correct |
32 |
Correct |
6 ms |
23900 KB |
Output is correct |
33 |
Correct |
5 ms |
23964 KB |
Output is correct |
34 |
Correct |
5 ms |
23900 KB |
Output is correct |
35 |
Correct |
5 ms |
23900 KB |
Output is correct |
36 |
Correct |
5 ms |
24152 KB |
Output is correct |
37 |
Correct |
6 ms |
23936 KB |
Output is correct |
38 |
Correct |
6 ms |
23900 KB |
Output is correct |
39 |
Correct |
6 ms |
23948 KB |
Output is correct |
40 |
Correct |
7 ms |
23900 KB |
Output is correct |
41 |
Correct |
162 ms |
51636 KB |
Output is correct |
42 |
Correct |
20 ms |
27140 KB |
Output is correct |
43 |
Correct |
19 ms |
27280 KB |
Output is correct |
44 |
Correct |
49 ms |
37904 KB |
Output is correct |
45 |
Correct |
158 ms |
51588 KB |
Output is correct |
46 |
Correct |
39 ms |
33700 KB |
Output is correct |
47 |
Correct |
20 ms |
27440 KB |
Output is correct |
48 |
Correct |
160 ms |
51596 KB |
Output is correct |
49 |
Correct |
149 ms |
51624 KB |
Output is correct |
50 |
Correct |
40 ms |
32568 KB |
Output is correct |
51 |
Correct |
24 ms |
27708 KB |
Output is correct |
52 |
Correct |
150 ms |
49356 KB |
Output is correct |
53 |
Correct |
159 ms |
52368 KB |
Output is correct |
54 |
Correct |
30 ms |
30136 KB |
Output is correct |
55 |
Correct |
63 ms |
39648 KB |
Output is correct |
56 |
Correct |
43 ms |
36384 KB |
Output is correct |
57 |
Correct |
48 ms |
34232 KB |
Output is correct |
58 |
Correct |
157 ms |
52916 KB |
Output is correct |
59 |
Correct |
36 ms |
31140 KB |
Output is correct |
60 |
Correct |
46 ms |
33732 KB |
Output is correct |