Submission #764247

#	Time	Username	Problem	Language	Result	Execution time	Memory
764247		fatemetmhr	Wombats (IOI13_wombats)	C++17	12 / 100	273 ms	16248 KiB

wombats

//  ~ Be Name Khoda ~  //

#include "wombats.h"
#include <bits/stdc++.h>
//#pragma GCC optimize ("O3")
//#pragma GCC target("avx2")
//#pragma GCC optimize("unroll-loops,Ofast")

using namespace std;

typedef long long ll;

#define pb       push_back
#define mp       make_pair
#define all(x)   x.begin(), x.end()
#define fi       first
#define se       second

const int maxn  =  1e6   + 10;
const int maxn5 =  5e5   + 10;
const int maxnC =  205;
const int maxnR =  5e3   +  5;
const int mod   =  1e9   + 7;
const int inf   =  1e9;

int n, m;
int dp[2][maxnR][maxnC];
int v[maxnR][maxnC], h[maxnR][maxnC];

inline void build(){
    for(int i = 0; i < m; i++) for(int j = 0; j < m; j++)
        dp[1][i][j] = inf;
    for(int i = 0; i < m; i++)
        dp[1][i][i] = 0;
    for(int j = 0; j < n; j++) for(int x = 0; x < m; x++){
        int mn = inf;
        for(int i = 0; i < m; i++){
            dp[j & 1][x][i] = min(mn, dp[(j + 1) & 1][x][i] + (j ? v[j - 1][i] : 0));
            mn = dp[j & 1][x][i] + h[j][i];
        }
        mn = inf;
        for(int i = m - 1; i >= 0; i--){
            dp[j & 1][x][i] = min(mn, dp[j & 1][x][i]);
            if(i)
                mn = dp[j & 1][x][i] + h[j][i - 1];
            //cout << "check " << j << ' ' << x << ' ' << i << ' ' << dp[j & 1][x][i] << ' ' << mn << endl;
        }
    }
}


void init(int R, int C, int H[5000][200], int V[5000][200]) {
    n = R;
    m = C;
    for(int i = 0; i < n; i++) for(int j = 0; j < m; j++){
        h[i][j] = H[i][j];
        v[i][j] = V[i][j];
    }
    build();
}

void changeH(int P, int Q, int W) {
    h[P][Q] = W;
    build();
}

void changeV(int P, int Q, int W) {
    h[P][Q] = W;
    build();
}

int escape(int v1, int v2){
    return dp[(n - 1) & 1][v1][v2];
}

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   15 |  int res;
      |      ^~~

• Subtask 1: 0 / 9
• Subtask 2: 12 / 12
• Subtask 3: 0 / 16
• Subtask 4: 0 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24