Submission #592637

#	Time	Username	Problem	Language	Result	Execution time	Memory
592637		andrei_boaca	Nuclearia (CEOI15_nuclearia)	C++14	11 / 100	1116 ms	496756 KiB

nuclearia

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef long double ld;
vector<vector<ll>> v,s;
ll n,m,k,q;
void add(array<int,4> p,ll val)
{
    int x1=p[0],y1=p[1],x2=p[2],y2=p[3];
    x1=max(x1,1);
    y1=max(y1,1);
    x2=min(x2*1LL,n);
    y2=min(y2*1LL,m);
    v[x1][y1]+=val;
    v[x2+1][y1]-=val;
    v[x1][y2+1]-=val;
    v[x2+1][y2+1]+=val;
}
ll getsum(ll x1,ll y1,ll x2,ll y2)
{
    return s[x2][y2]-s[x1-1][y2]-s[x2][y1-1]+s[x1-1][y1-1];
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>m>>k;
    v.resize(n+5);
    s.resize(n+5);
    for(int i=0;i<=n+4;i++)
    {
        v[i].resize(m+5);
        s[i].resize(m+5);
    }
    for(int z=1;z<=k;z++)
    {
        ll x,y,a,b;
        cin>>x>>y>>a>>b;
        ll nr=a;
        ll x1=x,y1=y,x2=x,y2=y;
        vector<array<int,4>> vals;
        ll cnt=0;
        while(nr>0)
        {
            vals.push_back({x1,y1,x2,y2});
            nr-=b;
            cnt++;
            x1--;
            x2++;
            y1--;
            y2++;
            if(x1<=0&&y1<=0&&x2>n&&y2>m)
                break;
        }
        cnt--;
        add(vals.back(),a);
        add(vals.back(),-cnt*b);
        //cout<<v[1][1]<<' ';
        reverse(vals.begin(),vals.end());
        for(int i=1;i<vals.size();i++)
        {
            add(vals[i],b);
            //cout<<v[1][1]<<' ';
        }
    }
    for(int i=1;i<=n;i++)
        for(int j=1;j<=m;j++)
            v[i][j]+=v[i-1][j]+v[i][j-1]-v[i-1][j-1];
    for(int i=1;i<=n;i++)
        for(int j=1;j<=m;j++)
        {
            s[i][j]=v[i][j]+s[i-1][j]+s[i][j-1]-s[i-1][j-1];
            //cout<<s[i][j]<<' ';
        }
    cin>>q;
    while(q--)
    {
        int x1,y1,x2,y2;
        cin>>x1>>y1>>x2>>y2;
        ll suma=getsum(x1,y1,x2,y2);
        ll cells=(y2-y1+1)*(x2-x1+1);
        ll rez=round(ld(suma)/ld(cells));
        cout<<rez<<'\n';
    }
    return 0;
}

Compilation message (stderr)

nuclearia.cpp: In function 'int main()':
nuclearia.cpp:46:29: warning: narrowing conversion of 'x1' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   46 |             vals.push_back({x1,y1,x2,y2});
      |                             ^~
nuclearia.cpp:46:32: warning: narrowing conversion of 'y1' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   46 |             vals.push_back({x1,y1,x2,y2});
      |                                ^~
nuclearia.cpp:46:35: warning: narrowing conversion of 'x2' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   46 |             vals.push_back({x1,y1,x2,y2});
      |                                   ^~
nuclearia.cpp:46:38: warning: narrowing conversion of 'y2' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   46 |             vals.push_back({x1,y1,x2,y2});
      |                                      ^~
nuclearia.cpp:61:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 4> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |         for(int i=1;i<vals.size();i++)
      |                     ~^~~~~~~~~~~~

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