제출 #336275

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
336275		beksultan04	Bigger segments (IZhO19_segments)	C++14	13 / 100	1594 ms	49900 KiB

segments

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define OK puts("OK");
#define fr first
#define sc second
#define ret return
#define scan1(a) scanf("%lld",&a);
#define scan2(a,b) scanf("%lld %lld",&a, &b);
#define scan3(a,b,c) scanf("%lld %lld %lld",&a,&b,&c);
#define all(s) s.begin(),s.end()
#define pb push_back
#define sz(v) (int)v.size()
#define endi puts("");
const int N = 1000291,INF=1e9+7;
int q[N],ct[N],ans,n,h3[N],h4[N],dp[N];
vector <pii > v[N];
int rec(int j,int sum,int cnt){
    int i;
    if (j > n){
        ret cnt;
    }

    int x3 = j+(sum*41)%N;
    x3%=N;

    int x4 = cnt+j*57+(sum*57*57)%N;
    x4%=N;


    if (h4[x4]==h3[x3] && h3[x3] == 1){
        ret dp[j];
    }
    h3[x3] = h4[x4] = 1;
    int mx=0;
    for (i=0;i<v[j].size();++i){
        if (v[j][i].fr >= sum){
            mx = max(mx,rec(v[j][i].sc+1,v[j][i].fr,cnt+1));
        }
    }
    ret dp[x4]=max(mx,dp[x4]);

}
main(){
    int i,j;
    scan1(n)
    for (i=0;i<N;++i)h4[i]=h3[i]=-1;
    for (i=1;i<=n;++i){
        scan1(q[i])
    }
    for (i=1;i<=n;++i){
        int sum=0;
        for (j=i;j<=n;++j){
            sum+=q[j];
            v[i].pb({sum,j});
        }
    }

    cout <<rec(1,0,0);;
}

컴파일 시 표준 에러 (stderr) 메시지

segments.cpp: In function 'long long int rec(long long int, long long int, long long int)':
segments.cpp:37:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     for (i=0;i<v[j].size();++i){
      |              ~^~~~~~~~~~~~
segments.cpp: At global scope:
segments.cpp:45:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   45 | main(){
      |      ^
segments.cpp: In function 'int main()':
segments.cpp:9:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 | #define scan1(a) scanf("%lld",&a);
      |                  ~~~~~^~~~~~~~~~~
segments.cpp:47:5: note: in expansion of macro 'scan1'
   47 |     scan1(n)
      |     ^~~~~
segments.cpp:9:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 | #define scan1(a) scanf("%lld",&a);
      |                  ~~~~~^~~~~~~~~~~
segments.cpp:50:9: note: in expansion of macro 'scan1'
   50 |         scan1(q[i])
      |         ^~~~~

• Subtask 1: 13 / 13
• Subtask 2: 0 / 14
• Subtask 3: 0 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27