Submission #31735

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
31735	2017-09-03 04:38:52	top34051	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	100 / 100	249 ms	100624 KiB

skyscraper

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#include<bits/stdc++.h>
using namespace std;
#define inf 1e9
#define maxn 30005
struct node {
    int x,val;
    node(int _x = 0,int _val = 0) {
        x = _x; val = _val;
    }
    bool operator < (node a) const {
        return a.val<val;
    }
};
int n,m,st,ft;
int mem[maxn];
int last[maxn];
bool ok[175][maxn];
vector<pair<int,int> > from[maxn];
priority_queue<node> heap;
main() {
    int i,j,x,y,pos,val,cnt;
    scanf("%d%d",&n,&m);
    for(i=0;i<m;i++) {
        scanf("%d%d",&pos,&val);
        if(i==0) st = pos;
        if(i==1) ft = pos;
        if(val>sqrt(n)) {
            x = pos; cnt = 0;
            while(x<n) {
                from[pos].push_back({x,cnt});
 
 
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Compilation message (stderr)

skyscraper.cpp:20:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:68:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(i=0;i<from[x].size();i++) {
                  ^
skyscraper.cpp:21:11: warning: unused variable 'j' [-Wunused-variable]
     int i,j,x,y,pos,val,cnt;
           ^
skyscraper.cpp:22:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
                        ^
skyscraper.cpp:24:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&pos,&val);
                                ^

• Subtask 1: 10 / 10
• Subtask 2: 12 / 12
• Subtask 3: 14 / 14
• Subtask 4: 21 / 21
• Subtask 5: 43 / 43