Submission #940548

#	Time	Username	Problem	Language	Result	Execution time	Memory
940548		vjudge1	Wombats (IOI13_wombats)	C++17	Compilation error	0 ms	0 KiB

wombats

//#pragma once 
#include <bits/stdc++.h>
#define f first
#define s second
const int INF = 1e9 + 7;
using namespace std;
const int G = 200000 + 10;
int n,m;
set <pair <int,int> > reb[G];
int A[5000][200],B[5000][200];
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 - 1;j++) {
            reb[i*m + j].insert({i*m + j + 1,H[i][j]});
            reb[i*m + j + 1].insert({i*m + j,H[i][j]});
        }
    }
    for(int i = 0;i < R;i++) {
        for(int j = 0;j < C;j++) {
            A[i][j] = H[i][j];
            B[i][j] = V[i][j];
        }
    }
    for(int i = 0;i < n - 1;i++) {
        for(int j = 0;j < m;j++) {
            reb[i*m + j].insert({(i + 1)*m + j,V[i][j]});
        }
    }
};
void changeH(int P, int Q, int W) {
    int v1 = P*m + Q,v2 = P*m + Q + 1;
    reb[v1].erase({A[P][Q],v2});
    reb[v2].erase({A[P][Q],v1});
    A[P][Q] = W;
    reb[v1].insert({A[P][Q],v2});
    reb[v2].insert({A[P][Q],v1});
};
void changeV(int P, int Q, int W) {
    int v1 = P*m + Q,v2 = (P + 1)*m + Q;
    reb[v1].erase({B[P][Q],v2});
    reb[v2].erase({B[P][Q],v1});
    B[P][Q] = W;
    reb[v1].insert({B[P][Q],v2});
    reb[v2].insert({B[P][Q],v1});
};
int dijkstra(int x,int y) {
    int rast[n*m] = {};
    for(int i = 0;i < n*m;i++) {
        rast[i] = INF;
    }
    rast[x] = 0;
    set <pair <int,int> > s;
    s.insert({0,x});
    while(!s.empty()) {
        pair <int,int> v = *s.begin();
        s.erase(s.find(v));
        for(auto u:reb[v.s]) {
            int rst = u.s + v.f;
            if(rst < rast[u.f]) {
                s.erase({rast[u.f],u.f});
                rast[u.f] = rst;
                s.insert({rast[u.f],u.f});
            }
        }
    }
    return rast[m*(n - 1) + y];
}
int escape(int V1, int V2) {
    int x = V1,y = V2;
    return dijkstra(x,y);
};
/*
signed main() {
    ios_base::sync_with_stdio(NULL);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m;
    for(int i = 0;i < n;i++) {
        for(int j = 0;j < m - 1;j++) {
            cin >> H[i][j];
        }
    }
    for(int i = 0;i < n - 1;i++) {
        for(int j = 0;j < m;j++) {
            cin >> V[i][j];
        }
    }
    init(n,m);
    int q;
    cin >> q;
    while(q--) {
        int type;
        cin >> type;
        if(type == 3) {
            int x,y;
            cin >> x >> y;
            cout << escape(x,y) << endl;
        }
        else {
            int a,b,c;
            cin >> a >> b >> c;
        }
    }
}
*/

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;
      |      ^~~
/usr/bin/ld: /tmp/ccFNZrkm.o: in function `main':
grader.c:(.text.startup+0x129): undefined reference to `init'
/usr/bin/ld: grader.c:(.text.startup+0x194): undefined reference to `escape'
/usr/bin/ld: grader.c:(.text.startup+0x203): undefined reference to `changeH'
/usr/bin/ld: grader.c:(.text.startup+0x26d): undefined reference to `changeV'
collect2: error: ld returned 1 exit status