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Submission #818054

# Submission time Handle Problem Language Result Execution time Memory
818054 2023-08-10T00:50:00 Z devariaota Lasers (NOI19_lasers) C++17
0 / 100
 1 ms 336 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
void print(ll Z) {
    cout << Z << endl;
}
int main() {
     ios_base::sync_with_stdio(0);
     cin.tie(0);
     cout.tie(0);
    ll L, R;
    cin >> L >> R;
    if(R == 1) {
        // Subtask 1
        ll X;
        cin >> X;
        if(X == 1) {
            ll Y;
            cin >> Y;
            if(Y > L/2) {
                if(L % 2) print((Y -(L / 2))*2 - 1);
            }
            else print(0);
        }
    }
    else {
        ll ans = 0;
        ll maxY = 0;
        while(R--){
            ll X;
            cin >> X;
            if(X == 1) {
                // Subtask 2
                ll Y;
                cin >> Y;
                maxY = max(maxY, Y);
            }
        }
        if(maxY > L/2) {
                if(L % 2) print((maxY -(L / 2))*2 - 1);
                else print(0);
        }
    }
    return 0;
}

Compilation message

lasers.cpp: In function 'int main()':
lasers.cpp:27:12: warning: unused variable 'ans' [-Wunused-variable]
   27 |         ll ans = 0;
      |            ^~~

Subtask #1
0 / 10.0

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

Subtask #2
0 / 14.0

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

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 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 1 ms 336 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

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