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Submission #781605

# Submission time Handle Problem Language Result Execution time Memory
781605 2023-07-13T08:33:54 Z christinelynn Strange Device (APIO19_strange_device) C++17
0 / 100
 1 ms 212 KB 
#include <bits/stdc++.h>
using namespace std;

# define int long long
# define fir first
# define sec second
# define pb push_back

const int cnst = 2e5+5;
bool mutipletestcase = 0;
//bool debug = false;

int gcd(int a, int b) {return b ? gcd(b, a%b): a;}
int lcm(int a, int b) {return a/gcd(a, b)*b;}

void solve() {
    int n, a, b; cin >> n >> a >> b;
    int gcdnum = gcd(a, b);
    a /= gcdnum, b /= gcdnum;
    int val = a*b;

    if(a*b <= 1e6) {
        int ans = 0;
        int get[val*2+5];
        memset(get, 0, sizeof(get));

        while(n--) {
            int x, y; cin >> x >> y;
            int len = y-x+1;
            if(len > a*b) ans = a*b;
            x %= val;
            y %= val;
            if(y < x) y += val;
            // cerr << x << " " << y << endl;
            get[x]+=1, get[y+1] -= 1;
        }

        if(ans == a*b) cout << ans << endl;
        else {
            bool yes[val+5];
            memset(yes, 0, sizeof(yes));

            for(int i = 1; i<=2*val; i++) {
                get[i] += get[i-1];
                cerr << get[i] << " ";
                if(get[i]) yes[i%val] = 1;
            }
            for(int i = 0; i<val; i++) {
                if(yes[i]) ans++;
            }

            cout << ans << endl;
        }
        return;
    }
    if(b == 1) {

    }

    set<pair<int, int>> st;
    while(n--) {
        int x, y; cin >> x >> y;
        for(int i = x; i<=y; i++) {
            st.insert({(i+i/b)%a, i%b});
        }
    }

    cout << st.size() << endl;
}

signed main() {
    ios_base::sync_with_stdio(false);
    int t = 1;
    if(mutipletestcase) cin >> t; 
    while(t--) solve();
}

Subtask #1
0 / 10.0

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

Subtask #2
0 / 5.0

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

Subtask #3
0 / 5.0

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

Subtask #4
0 / 5.0

# 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 / 5.0

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

Subtask #6
0 / 20.0

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

Subtask #7
0 / 20.0

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

Subtask #8
0 / 30.0

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