Submission #412837

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
412837	2021-05-27 16:18:47	couplefire	Semafor (COI20_semafor)	C++17	100 / 100	258 ms	836 KiB

semafor

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#include <bits/stdc++.h>
using namespace std;
#define int long long
const int MOD = 1000000007;
inline int add(int a, int b){return (a+b>=MOD)?a+b-MOD:a+b;}
inline void inc(int& a, int b){a = add(a, b);}
inline int sub(int a, int b){return (a-b<0)?a-b+MOD:a-b;}
inline void dec(int &a, int b){a = sub(a, b);}
inline int mul(int a, int b){return 1ll*a*b%MOD;}
inline void grow(int &a, int b){a = mul(a, b);}
int bpow(int a, int b){
    int res = 1;
    while(b > 0){
        if(b&1) grow(res, a);
        grow(a, a);
        b >>= 1;
    }
    return res;
}
int inv(int a){return bpow(a, MOD-2);}
struct Matrix{
    int n, m;
    vector<vector<int>> mat;
    Matrix(){}
    Matrix(int _n, int _m){
 
 
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• Subtask 1: 6 / 6
• Subtask 2: 15 / 15
• Subtask 3: 12 / 12
• Subtask 4: 12 / 12
• Subtask 5: 15 / 15
• Subtask 6: 40 / 40