| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 786060 |
2023-07-18T01:14:34 Z |
MODDI |
Wombats (IOI13_wombats) |
C++14 |
|
0 ms |
0 KB |
#include "wombats.h"
#include <bits/stdc++.h>
using namespace std;
#define mp make_pair
#define pb push_back
#define pii pair<int,int>
#define ll long long
map<pair<pii,pii>, int> cost;
int r, c;
void init(int R, int C, int H[5000][200], int V[5000][200]) {
r = R;
c = C;
for(int i = 0; i < R; i++)
{
for(int j = 0; j < C-1; j++){
cost[mp(mp(i,j), mp(i,j+1))] = H[i][j];
}
}
for(int i = 0; i < R-1; i++){
for(int j = 0; j < C; j++){
cost[mp(mp(i,j), mp(i+1, j))] = V[i][j];
// cout<<"COST: "<<i<<" "<<j<<" to "<<i+1<<" "<<j<<" is "<<V[i][j]<<endl;
}
}
}
void changeH(int P, int Q, int W) {
cost[mp(mp(P,Q), mp(P,Q+1))] = W;
}
void changeV(int P, int Q, int W) {
cost[mp(mp(P,Q), mp(P+1, Q))] = W;
}
int escape(int V1, int V2) {
ll dist[r][c];
for(int i = 0; i < r; i++)
for(int j = 0; j < c; j++)
dist[i][j] = 1e15;
dist[0][V1] = 0;
priority_queue<pair<int, pii> > pq;
pq.push(mp(0, mp(0, V1)));
while(!pq.empty()){
pii at = pq.top().second;
pq.pop();
int x = at.first, y = at.second;
// cout<<x<<" "<<y<<" "<<dist[x][y]<<endl;
if(y - 1 >= 0 && dist[x][y-1] > dist[x][y] + cost[mp(mp(x,y-1), mp(x,y))]){
dist[x][y-1] = dist[x][y] + cost[mp(mp(x,y-1), mp(x,y))];
pq.push(mp(-dist[x][y-1], mp(x,y-1)));
}
if(y+1 < c && dist[x][y+1] > dist[x][y] + cost[mp(mp(x,y), mp(x,y+1))]){
dist[x][y+1] = dist[x][y] + cost[mp(mp(x,y), mp(x,y+1))];
pq.push(mp(-dist[x][y+1], mp(x,y+1)));
}
// cout<<dist[x+1][y]<<" "<<dist[x][y] + cost[mp(mp(x,y), mp(x+1,y))]<<endl;
if(x + 1 < r && dist[x+1][y] > dist[x][y] + cost[mp(mp(x,y), mp(x+1,y))]){
dist[x+1][y] = dist[x][y] + cost[mp(mp(x,y), mp(x+1, y))];
pq.push(mp(-dist[x+1][y], mp(x+1, y)));
}
}
return dist[r-1][V2];
}
int H[5000][200], V[5000][200];
int main(){
int r, c;
cin>>r>>c;
memset(H, 0, sizeof H);
for(int i = 0; i < r-1; i++){
cin>>V[i][0];
}
init(r, c, H, V);
cout<<escape(0, 0)<<endl;
}
Compilation message
grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
15 | int res;
| ^~~
/usr/bin/ld: /tmp/ccV3yDoc.o: in function `main':
wombats.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc3G7Mja.o:grader.c:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status
