Submission #1115909

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1115909	2024-11-21 04:07:15	nathan4690	Toll (BOI17_toll)	C++17	100 / 100	142 ms	14408 KiB

toll

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#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define el cout << '\n'
#define f1(i,n) for(int i=1;i<=n;i++)
#define __file_name ""
using namespace std;
const ll maxn = 5e4+5, inf=1e18;
struct Matrix{
    int r, c;
    vector<vector<ll>> data;
    Matrix(){};
    Matrix(int r, int c): r(r), c(c), data(r, vector<ll>(c, 1e9)){};
    Matrix(vector<vector<ll>> a): r(a.size()), c(a.empty() ? 0 : a[0].size()), data(a){};
    Matrix operator*(const Matrix &rhs) const{
        assert(c == rhs.r);
        Matrix res(r, rhs.c);
//        cout << (*this) << "TIMES\n" << rhs;el;
        for(int i=0;i<r;i++){
            for(int j=0;j<rhs.c;j++){
                for(int k=0;k<c;k++){
                    res.data[i][j] = min(res.data[i][j], data[i][k] + rhs.data[k][j]);
                }
            }
        }
        return res;
    }
    Matrix operator^(const long long &e) const{
        assert(r == c);
 
 
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Compilation message (stderr)

toll.cpp: In function 'int main()':
toll.cpp:92:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   92 |         freopen(__file_name ".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
toll.cpp:93:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |         freopen(__file_name ".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 8 / 8
• Subtask 4: 31 / 31
• Subtask 5: 44 / 44