Submission #978301

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
978301	2024-05-09 05:57:03	myheartwaving	Fish 3 (JOI24_fish3)	C++14	100 / 100	1464 ms	184396 KiB

Main

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#include <bits/stdc++.h>
#define int long long
using namespace std;
const int N = 300010, INF = 1e18;
struct mat {
    int a[4][4];
    mat() {
        a[1][2] = a[1][3] = a[2][1] = a[2][3] = a[3][1] = a[3][2] = 0;
        a[1][1] = a[2][2] = a[3][3] = 1;
    }
    mat operator*(const mat &m) const {
        mat ans;
////        ans.a[1][1] = a[1][1] * m.a[1][1] + a[1][2] * m.a[2][1] + a[1][3] * m.a[3][1];
        ans.a[1][1] = a[1][1] * m.a[1][1];
////        ans.a[1][2] = a[1][1] * m.a[1][2] + a[1][2] * m.a[2][2] + a[1][3] * m.a[3][2];
        ans.a[1][2] = a[1][1] * m.a[1][2] + a[1][2];
////        ans.a[1][3] = a[1][1] * m.a[1][3] + a[1][2] * m.a[2][3] + a[1][3] * m.a[3][3];
////        ans.a[2][1] = a[2][1] * m.a[1][1] + a[2][2] * m.a[2][1] + a[2][3] * m.a[3][1];
////        ans.a[2][2] = a[2][1] * m.a[1][2] + a[2][2] * m.a[2][2] + a[2][3] * m.a[3][2];
////        ans.a[2][3] = a[2][1] * m.a[1][3] + a[2][2] * m.a[2][3] + a[2][3] * m.a[3][3];
        ans.a[1][3] = 0ll;
        ans.a[2][1] = 0ll;
        ans.a[2][2] = 1ll;
        ans.a[2][3] = 0ll;
        ans.a[3][1] = a[3][1] * m.a[1][1] + a[3][3] * m.a[3][1];
        ans.a[3][2] = a[3][1] * m.a[1][2] + a[3][2] + a[3][3] * m.a[3][2];
//        ans.a[3][3] = a[3][2] * m.a[2][3] + a[3][3] * m.a[3][3];
        ans.a[3][3] = 1ll;
        return ans;
    }
 
 
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• Subtask 2: 7 / 7
• Subtask 3: 28 / 28
• Subtask 4: 20 / 20
• Subtask 5: 36 / 36