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Submission #543137

# Submission time Handle Problem Language Result Execution time Memory
543137 2022-03-29T12:57:24 Z OttoTheDino Strange Device (APIO19_strange_device) C++17
0 / 100
 32 ms 340 KB 
#include <bits/stdc++.h>
using namespace std;
int main(){
long long n, a, b, ans=0;
cin>>n>>a>>b;
if (log(a)+log(b)>log(__gcd(a,b+1))+log(1e18)){
    for (int i =0; i<n; ++i){
        long long li,ri;cin>>li>>ri;
        ans += ri-li+1;
    }
    cout<<ans<<endl;
    return 0;
}
long long s = a/__gcd(a,b+1)*b;
set<pair<long long, long long>> st;
for (int i = 0; i<n;++i){
    int li, ri; cin >> li >> ri;
    if (ri-li>=s) st.insert({0,s-1});
    else if (ri%s<li%s){
        st.insert({0,ri%s});
        st.insert({li%s,s-1});
    }
    else st.insert({li%s,ri%s});
}
ans =s;
long long x = -1;
for (auto el : st) {
    ans -= max (el.first-x-1, 0LL);
    x = max (x, el.second);
}
ans -= s-1-x;
cout << ans << endl;
return 0;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 1 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Incorrect 1 ms 304 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 32 ms 316 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 32 ms 316 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 32 ms 316 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 4 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 1 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -