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Submission #643011

# Submission time Handle Problem Language Result Execution time Memory
643011 2022-09-21T04:17:14 Z devariaota Lasers (NOI19_lasers) C++17
24 / 100
 270 ms 13284 KB 
#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
const ll MOD=1e9+7;
using namespace std;
ll N,M,s[500005];
vector <pair<ll,ll> > vec;
int main(){
  cin>>N>>M;
  for(int i=1;i<=M;i++){
    cin>>s[i];
    ll a[s[i]+1];
    ll pref[s[i]+1];
    ll suff[s[i]+1];
    for(int j=1;j<=s[i];j++){
      ll y;
      cin>>y;
      a[j]=y;
    }
    pref[0]=0;
    suff[s[i]+1]=0;
    for(int j=1;j<=s[i];j++){
      pref[j]=pref[j-1]+a[j];
    }
    for(int j=s[i];j>=1;j--){
      suff[j]=suff[j+1]+a[j];
    }
    for(int j=1;j<=s[i];j++){
      ll l=N-suff[j]+1;
      ll r=pref[j];
      if(l<=r){
        vec.push_back({l,r});
      }
    }
  }
  sort(vec.begin(),vec.end());
  if(vec.empty()){
    cout<<0<<endl;
    return 0;
  }
  ll l=vec[0].fi;
  ll r=vec[0].se;
  ll ans=r-l+1;
  for(int i=1;i<vec.size();i++){
    if(vec[i].fi>r){
      l=vec[i].fi;
      r=vec[i].se;
      ans+=vec[i].se-vec[i].fi+1;
    }
    else if(vec[i].se>r){
      l=vec[i].fi;
      r=vec[i].se;
      ans+=vec[i].se-r;
    }
  }
  cout<<ans<<endl;
}
/*
20 6
1 8
2 2 8
3 2 2 8
4 2 2 2 8
5 2 2 2 2 8
6 2 2 2 2 2 8
*/

Compilation message

lasers.cpp: In function 'int main()':
lasers.cpp:46:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |   for(int i=1;i<vec.size();i++){
      |               ~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 263 ms 11844 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 316 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 270 ms 13284 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 55 ms 8252 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 55 ms 8252 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 263 ms 11844 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 316 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 270 ms 13284 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Incorrect 55 ms 8252 KB Output isn't correct
22 Halted 0 ms 0 KB -