Submission #1028876

#	Time	Username	Problem	Language	Result	Execution time	Memory
1028876		tolbi	Wombats (IOI13_wombats)	C++17	55 / 100	20103 ms	35344 KiB

wombats

#include "wombats.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXR = 5000;
const int MAXC = 200;
typedef long long ll;
const ll INF = 1e15;
ll H[MAXR][MAXC]={},V[MAXR][MAXC]={};
int C,R;
void init(int RR, int CC, int HH[5000][200], int VV[5000][200]) {
    C=CC,R=RR;
    for (int i = 0; i < R; i++){
        for (int j = 0; j < C; j++){
            if (j+1<C) H[i][j]=HH[i][j];
            if (i+1<R) V[i][j]=VV[i][j];
        }
    }
}

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

void changeV(int P, int Q, int W) {
    V[P][Q]=W;
}
ll ans[MAXR][MAXC];
ll nans[MAXR][MAXC];
ll cur[MAXR][MAXC];
int opt[MAXR][MAXC];
int escape(int V1, int V2) {
    for (int i = 0; i < C; i++){
        for (int j = 0; j < C; j++){
            if (i==j) ans[i][j]=0;
            else ans[i][j]=INF;
        }
    }
    for (int x = 0; x < R; x++){
        for (int i = 0; i < C; i++){
            ll somma = 0;
            for (int j = i; j < C; j++){
                cur[i][j]=somma+V[x][j];
                somma+=H[x][j];
            }
            somma=0;
            for (int j = i-1; j >= 0; j--){
                somma+=H[x][j];
                cur[i][j]=somma+V[x][j];
            }
        }
        for (int i = C-1; i >= 0; i--){
            for (int j = 0; j < C; j++){
                int lbound = 0;
                if (j) lbound = opt[i][j-1];
                int rbound = C-1;
                if (i+1<C) rbound = opt[i+1][j];
                nans[i][j]=ans[i][lbound]+cur[lbound][j];
                opt[i][j]=lbound;
                for (int k = lbound; k <= rbound; k++){
                    if (ans[i][k]+cur[k][j]<nans[i][j]){
                        nans[i][j]=ans[i][k]+cur[k][j];
                        opt[i][j]=k;
                    }
                }
            }
        }
        for (int i = 0; i < C; i++){
            for (int j = 0; j < C; j++){
                ans[i][j]=nans[i][j];
            }
        }
    }
    return ans[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: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 18 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24