Submission #536957

#	Time	Username	Problem	Language	Result	Execution time	Memory
536957		dantoh000	Popeala (CEOI16_popeala)	C++14	17 / 100	37 ms	1496 KiB

popeala

#include <bits/stdc++.h>
using namespace std;
int n,t,s;
int p[505];
int r[55][505];
int mem[505][55];
int ct[505][505];
const int INF = 2000000001;
int dp(int id, int k){
    if (id == 0) return 0;
    if (k == 0) return INF;
    if (mem[id][k] != -1) return mem[id][k];
    int ret = INF;
    for (int j = id-1; j >= k-1; j--){
        ret = min(ret, dp(j,k-1) + (p[id]-p[j])*ct[j+1][id]);
    }
    //printf("dp %d %d = %d\n",id,k,ret);
    return mem[id][k] = ret;
}
int main(){
    scanf("%d%d%d",&n,&t,&s);
    if (t > 500) return 0;
    for (int i = 1; i <= t; i++){
        scanf("%d",&p[i]);
        p[i] += p[i-1];
    }

    for (int i = 0; i < n; i++){
        for (int j = 1 ; j <= t; j++){
            char ch;
            scanf(" %c",&ch);
            r[i][j] = ch-'0';
        }
    }
    for (int k = 0; k < n; k++){
        for (int i = 1; i <= t; i++){
            int cur = r[k][i];
            ct[i][i] += cur;
            for (int j = i+1; j <= t; j++){
                if (r[k][j] == 0) cur = 0;
                ct[i][j] += cur;
            }
        }
    }
    memset(mem,-1,sizeof(mem));
    for (int i = 1; i <= s; i++){
        printf("%d\n", dp(t,i));
    }

}

Compilation message (stderr)

popeala.cpp: In function 'int main()':
popeala.cpp:21:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     scanf("%d%d%d",&n,&t,&s);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
popeala.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |         scanf("%d",&p[i]);
      |         ~~~~~^~~~~~~~~~~~
popeala.cpp:31:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |             scanf(" %c",&ch);
      |             ~~~~~^~~~~~~~~~~

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