Submission #154381

#	Time	Username	Problem	Language	Result	Execution time	Memory
154381		arnold518	Popeala (CEOI16_popeala)	C++14	26 / 100	2054 ms	52104 KiB

popeala

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 50;
const int MAXT = 20000;
const ll INF = 1e15;

int N, T, S, P[MAXT+10], R[MAXN+10][MAXT+10];
vector<int> V[MAXT+10];
int cnt[MAXN+10];
ll dp[MAXN+10][MAXT+10];

struct SEG
{
    ll A[MAXT+10], tree[MAXT*4+10];

    void init(int node, int tl, int tr)
    {
        if(tl==tr) { tree[node]=A[tl]; return; }
        int mid=tl+tr>>1;
        init(node*2, tl, mid);
        init(node*2+1, mid+1, tr);
        tree[node]=min(tree[node*2], tree[node*2+1]);
    }

    ll query(int node, int tl, int tr, int l, int r)
    {
        if(l<=tl && tr<=r) return tree[node];
        if(r<tl || tr<l) return INF;
        int mid=tl+tr>>1;
        return min(query(node*2, tl, mid, l, r), query(node*2+1, mid+1, tr, l, r));
    }
}seg[MAXN+10];

int main()
{
    int i, j, k, p;

    scanf("%d%d%d", &N, &T, &S);
    for(i=1; i<=T; i++) scanf("%d", &P[i]), P[i]+=P[i-1];
    for(i=1; i<=N; i++) for(j=1; j<=T; j++) scanf("%1d", &R[i][j]);

    for(i=1; i<=T; i++)
    {
        for(j=1; j<=N; j++) if(R[j][i]==0) cnt[j]=i;
        for(j=1; j<=N; j++) V[i].push_back(cnt[j]);
        V[i].push_back(i); V[i].push_back(0);
        sort(V[i].begin(), V[i].end());
        //for(j=0; j<=N+1; j++) printf("%d ", V[i][j]); printf("\n");
    }

    for(i=0; i<=S; i++) for(j=0; j<=T; j++) dp[i][j]=INF; dp[0][0]=0;
    for(i=1; i<=S; i++)
    {
        for(k=0; k<=N; k++)
        {
            for(j=0; j<=T; j++) seg[k].A[j]=dp[i-1][j]-k*P[j];
            seg[k].init(1, 0, T);
        }
        for(k=0; k<=N; k++)
        {
            for(j=1; j<=T; j++)
            {
                if(V[j][k]==V[j][k+1]) continue;
                dp[i][j]=min(dp[i][j], seg[k].query(1, 0, T, V[j][k], V[j][k+1]-1)+k*P[j]);
            }
            //printf("%lld ", dp[i][j]);
        }
        //printf("\n");
    }
    for(i=1; i<=S; i++) printf("%lld\n", dp[i][T]);
}

Compilation message (stderr)

popeala.cpp: In member function 'void SEG::init(int, int, int)':
popeala.cpp:24:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int mid=tl+tr>>1;
                 ~~^~~
popeala.cpp: In member function 'll SEG::query(int, int, int, int, int)':
popeala.cpp:34:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int mid=tl+tr>>1;
                 ~~^~~
popeala.cpp: In function 'int main()':
popeala.cpp:56:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(i=0; i<=S; i++) for(j=0; j<=T; j++) dp[i][j]=INF; dp[0][0]=0;
     ^~~
popeala.cpp:56:59: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
     for(i=0; i<=S; i++) for(j=0; j<=T; j++) dp[i][j]=INF; dp[0][0]=0;
                                                           ^~
popeala.cpp:41:18: warning: unused variable 'p' [-Wunused-variable]
     int i, j, k, p;
                  ^
popeala.cpp:43:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &N, &T, &S);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
popeala.cpp:44:43: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1; i<=T; i++) scanf("%d", &P[i]), P[i]+=P[i-1];
                         ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
popeala.cpp:45:50: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1; i<=N; i++) for(j=1; j<=T; j++) scanf("%1d", &R[i][j]);
                                             ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 0 / 74