问题：#1 RE,下载数据本地运行正确

测试点返回信息：

Recived signal 11: Segmentation fault with invalid memory reference.

代码：

#include <iostream>
#include <cstdio>
#include <string>
#include <cstring>
#include <cmath>
#include <vector>
#include <algorithm>
using namespace std;

/*
	主猪：MP
	忠猪：ZP
	反猪: FP
	桃：P
	杀：K
	闪：D
	决斗：F
	南猪入侵：N
	万箭齐发：W
	无懈可击：J -- 帮别人挡是献殷勤，挡别人的献殷勤是表敌意 
	猪哥连弩：Z
	初始体力/上限：4 
*/

int n, m, mp, fz, sta;
vector<char> stack1, card_stack;
struct player{
	char id, app;
	int hp, lst, nxt;
	vector<char> card;
	bool equiped, dead;
} newp;
vector<player> pig;

int next(int x);
int relat(int x, int y);
bool find_card(int x, char y);
void die(int from, int x);
void lohp(int from, int to);
void fakef(int from, int to);
void get_card(int x, int num);
void attack(int from, int to);
void kill(int from, int to);
void play(int x);


int main(){
//	freopen("test1.in","r",stdin);
    scanf("%d%d",&n,&m);
    newp.hp = 4;
    newp.equiped = 0;
    newp.dead = 0;
    for(int i=1; i<=n; ++i){
    	newp.app = 'U';
    	newp.card.clear();
    	getchar();
    	newp.id = getchar();
    	if(newp.id=='M')
    		mp=i-1, newp.app='M';
    	else if(newp.id=='F')	++fz;
    	getchar();
    	for(int j=1; j<=4; ++j)
    		getchar(),
    		newp.card.push_back(getchar());
    	newp.nxt = i;
    	newp.lst = i-2;
    	pig.push_back(newp);
	}
	pig[0].lst = n-1;
	pig[n-1].nxt = 0;
    for(int i=1; i<=m; ++i)
		getchar(),
   		card_stack.push_back(getchar());
   	reverse(card_stack.begin(), card_stack.end());
   	int i=0;
   	while(!sta){
   		get_card(i, 2);
   		play(i);
   		i = next(i);
	}
	if(sta==1)	printf("MP\n");
	else	printf("FP\n");
	for(int i=0; i<n; ++i)
		if(pig[i].dead)	printf("DEAD\n");
		else{
			for(int j=0; j<pig[i].card.size(); ++j){
				char a = pig[i].card[j];
				if(a!=' ')	printf("%c ",a);
			}
			printf("\n");
		}
    return 0;
}

int next(int x){
	return pig[x].nxt;
}	// 寻找下一玩家 

void get_card(int x, int num){
	for(int i=1; i<=num; ++i){
		pig[x].card.push_back(card_stack.back());
		if(card_stack.size()>1)	card_stack.pop_back();
	}
	return;
}	// 抽卡 

void play(int x){
	bool kil=0;
	for(int i=0; i<pig[x].card.size(); ++i){
		char *a = &pig[x].card[i];
		if(*a==' ')	continue;					
		else if(*a=='P' && pig[x].hp<4)
			++pig[x].hp,	*a = ' ';
		else if(*a=='K' && (!kil || pig[x].equiped)){
			int ne = next(x);
			if(relat(x,ne)<0)
				kill(x,ne),	kil=1,	*a = ' ';
		}
		else if(*a=='Z'){
			if(!pig[x].equiped)
				for(int j=0; j<i; ++j){
					if(pig[x].card[j]=='K'){
						int ne = next(x);
						if(relat(x, ne)<0)
							kill(x,ne),	pig[x].card[j] = ' ';
					}
				}
			*a = ' ', pig[x].equiped=1;		
		}	
		if(sta)	return;
	}
	return;
}	// 出卡 

int relat(int x, int y){
	if(pig[y].app=='F')
		if(pig[x].id=='M')	return -1;
	if(pig[y].app!=pig[y].id)	return 0;
	if(pig[x].id==pig[y].id)	return 1;
	if(pig[y].id+pig[x].id==char(167))	return 1;
	return -1;
};	// 判断出牌方与对方关系 

void attack(int from, int to){
	if(pig[from].id==pig[from].app)	return;
	if(pig[to].id=='F' && pig[to].app=='F' && pig[from].id=='Z')
		pig[from].app='Z';
	else if(pig[to].id=='Z' && pig[to].app=='Z' && pig[from].id=='F')
		pig[from].app='F';
	else if(pig[to].id=='M' && pig[from].id=='F')	pig[from].app='F';
	return;
}	// 表敌意 

void fakef(int from, int to){
	if(pig[to].id=='M' && pig[from].app=='U')	pig[from].app='F';
	return;
}	// 设置类反猪 

bool find_card(int x, char y){
	for(int i=0; i<pig[x].card.size(); ++i)
		if(pig[x].card[i]==y){
			pig[x].card[i]=' ';
			return true;
		}
	return false;
}	// 找卡 & 出卡 

void lohp(int from, int x){
	if(pig[x].hp==1){
		if(!find_card(x, 'P'))
			die(from, x);
	}
	else	--pig[x].hp;
	return;
}	// 扣血 

void die(int from, int x){
	pig[x].dead=1;
	pig[x].card.clear();
	pig[pig[x].lst].nxt = pig[x].nxt;
	pig[pig[x].nxt].lst = pig[x].lst;
	if(pig[x].id=='M')	sta=-1;
	else if(pig[x].id=='F'){
		if(!--fz)	sta=1;
		else	get_card(from, 3);
	}
	else if(pig[from].id=='M'){
		pig[from].card.clear();
		pig[from].equiped = 0;
	}
	return;	
} // 死亡 

void kill(int from, int to){
	attack(from, to);
	if(!find_card(to, 'D')){
		lohp(from, to);
	}
	return;;
}	// 出杀 

另：本蒟蒻目标只是80'，还请大佬理解